QCLab - User contributions [en]

Yoon, Tai Hyun

2017-11-23T08:08:16Z

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[[file:Yoon, Tai Hyun.jpg|thumb|x300px|Prof. Yoon, Tai Hyun (Korea Univ)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Tai-Hyun Yoon is an experimental optical physicist focused on laser spectroscopy and frequency metrology. He obtained his B.S. (1985) in physics from Korea University and Ph.D. degree (1999) in quantum optics from KAIST. Before coming to Korea University, he was a principle investigator at the Korea Research Institute of Standards and Science (KRISS), and a research associate in the JILA laboratory at the University of Colorado.

==Research Interests==
Precision laser spectroscopy with frequency stabilized CW and femtosecond lasers, development of Yb-doped mode-locked fiber lasers and their application, measurement of optical frequencies and fundamental physical constants.

==Contributions==
* [[Optical, Atomic, and Photon Interferometers for precision measurements]]

Yoon, Tai Hyun

2017-11-23T08:04:42Z

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[[file:Yoon, Tai Hyun.jpg|thumb|x300px|Prof. Yoon, Tai Hyun (Korea Univ)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Tai-Hyun Yoon is an experimental optical physicist focused on laser spectroscopy and frequency metrology. He obtained his B.S. (1985) in physics from Korea University and Ph.D. degree (1999) in quantum optics from KAIST. Before coming to Korea University, he was a principle investigator at the Korea Research Institute of Standards and Science (KRISS), and a research associate in the JILA laboratory at the University of Colorado.

==Contributions==
* [[Optical, Atomic, and Photon Interferometers for precision measurements]]

Yoon, Tai Hyun

2017-11-23T08:03:43Z

Windlight: Created page with "Prof. Yoon, Tai Hyun (Korea Univ) Category:Speakers Category:Colloquium Speakers Tai-Hyun Yoon is an experimental optical phy..."

[[file:Yoon, Tai Hyun.jpg|thumb|x300px|Prof. Yoon, Tai Hyun (Korea Univ)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Tai-Hyun Yoon is an experimental optical physicist focused on laser spectroscopy and frequency metrology. He obtained his B.S. (1985) in physics from Korea University and Ph.D. degree (1999) in quantum optics from KAIST. Before coming to Korea University, he was a principle investigator at the Korea Research Institute of Standards and Science (KRISS), and a research associate in the JILA laboratory at the University of Colorado.

==Contributions==
* [Optical, Atomic, and Photon Interferometers for precision measurements]]

File:Yoon, Tai Hyun.jpg

2017-11-23T07:59:42Z

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Optical, Atomic, and Photon Interferometers for precision measurements

2017-11-23T07:59:28Z

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[[file:Yoon, Tai Hyun.jpg|thumb|x300px|Prof. Yoon, Tai Hyun (Korea Univ)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Yoon, Tai Hyun]] (Korea Univ)
* Date: December 05, 2017
* Place: Science Building 433

In this talk, I will discuss recent develop of Yb optical lattice clock with an accuracy of 10^(-18) that is one of the promising candidate for the new definition of the SI second (s) and the meter (m). For this ultra-precise and stable operation of Yb optical lattice clock, atomic and optical interferometers played major roles. For example, an atomic Ramsey spectroscopy with a Ramsey time of an order of 1 s was demonstrated with magic-wavelength-trapped Yb atoms. For the demonstration of such a Ramsey atom interferometer, a mHz-linewidth coherent laser was constructed with a ultra-stable and low-drift Fabry-Perot reference interferometer. In addition, I will discuss the application of two-slit interferometer in time domain with dual frequency comb spectrometer to detect molecular transitions in a few fs time scale. Finally, a new kind of single photon interferometer will be introduced for the high-resolution quantum spectroscopy with undetected signal photons based on the feature of induced quantum coherence due to indistinguishability of two single-photon-added states of idler photons.

Kim, Sun Kee

2017-11-17T01:33:05Z

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[[file:Kim, Sun Kee.jpg|thumb|x300px|Prof. Kim, Sun Kee (SNU)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

==Permanent Address==
Department of Physics and Astronomy, Seoul National University

==Education==
* 1979-1983 : BS, Korea University
* 1983-1985 : MS, Korea University
* 1985-1988 : Ph.D. Korea University

==Positions held==
* 1988-1990 : Research Associate, KEK, Japan
* 1990-1992 : Senior Research Associate, Rutgers University
* 1992-present : Professor, Seoul National University
* 2011-2014 : Director, Rare Isotope Science Project, Institute for Basic Science
* 1995-1995 : Visiting Scientist, Fermi National Accelerator Laoboratory
* 1999-1999 : Visiting Scientist, KEK

==Contributions==
* [[반물질의 자유낙하]]

Kim, Sun Kee

2017-11-17T01:31:56Z

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[[file:Kim, Sun Kee.jpg|thumb|x300px|Prof. Kim, Sun Kee (SNU)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

===Permanent Address===
Department of Physics and Astronomy, Seoul National University

===Education===
# 1979-1983 : BS, Korea University
# 1983-1985 : MS, Korea University
# 1985-1988 : Ph.D. Korea University

===Positions held===
# 1988-1990 : Research Associate, KEK, Japan
# 1990-1992 : Senior Research Associate, Rutgers University
# 1992-present : Professor, Seoul National University
# 2011-2014 : Director, Rare Isotope Science Project, Institute for Basic Science
# 1995-1995 : Visiting Scientist, Fermi National Accelerator Laoboratory
# 1999-1999 : Visiting Scientist, KEK

==Contributions==
* [[반물질의 자유낙하]]

Kim, Sun Kee

2017-11-17T01:31:11Z

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[[file:Kim, Sun Kee.jpg|thumb|x300px|Prof. Kim, Sun Kee (SNU)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

==Permanent Address==
Department of Physics and Astronomy, Seoul National University

==Education==
# 1979-1983 : BS, Korea University
# 1983-1985 : MS, Korea University
# 1985-1988 : Ph.D. Korea University

==Positions held==
# 1988-1990 : Research Associate, KEK, Japan
# 1990-1992 : Senior Research Associate, Rutgers University
# 1992-present : Professor, Seoul National University
# 2011-2014 : Director, Rare Isotope Science Project, Institute for Basic Science
# 1995-1995 : Visiting Scientist, Fermi National Accelerator Laoboratory
# 1999-1999 : Visiting Scientist, KEK

==Contributions==
* [[반물질의 자유낙하]]

Kim, Sun Kee

2017-11-17T01:28:56Z

Windlight: Created page with "Prof. Kim, Sun Kee (SNU) Category:Speakers Category:Colloquium Speakers Permanent Address : Department of Physics and Astronomy..."

[[file:Kim, Sun Kee.jpg|thumb|x300px|Prof. Kim, Sun Kee (SNU)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Permanent Address :
Department of Physics and Astronomy, Seoul National University

Education
1979-1983 : BS, Korea University
1983-1985 : MS, Korea University
1985-1988 : Ph.D. Korea University

Positions held
1988-1990 : Research Associate, KEK, Japan
1990-1992 : Senior Research Associate, Rutgers University
1992-present : Professor, Seoul National University
2011-2014 : Director, Rare Isotope Science Project, Institute for Basic Science
1995-1995 : Visiting Scientist, Fermi National Accelerator Laoboratory
1999-1999 : Visiting Scientist, KEK

==Contributions==
* [[반물질의 자유낙하]]

File:Kim, Sun Kee.jpg

2017-11-17T01:26:26Z

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반물질의 자유낙하

2017-11-17T01:25:40Z

Windlight: Created page with "Prof. Kim, Sun Kee (SNU) Category:Colloquiums Category:Seminars * Speaker: Prof. Kim, Sun Kee (SNU) * Date: November 21, 201..."

[[file:Kim, Sun Kee.jpg|thumb|x300px|Prof. Kim, Sun Kee (SNU)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Kim, Sun Kee]] (SNU)
* Date: November 21, 2017
* Place: Science Building 433

무거운 물체와 가벼운 물체를 동시에 자유낙하 시키면 동시에 땅에 떨어질까? 지금은 모두 잘 알고 있는 이 간단한 질문에 대한 답은 갈릴레오가 실험을 하기 전까지는 분명하지 않았다. 그러면 반물질은 물질과 같이 떨어질까 ? 본 강연에서는 반물질의 자유낙하 실험을 통하여 이 질문에 답을 찾고자 하는 GBAR실험을 소개한다.

Zero-Point Energy, Fluctuations, and Dissipation: A (Mostly) Quantum-Optical Perspective

2017-11-17T01:24:19Z

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[[file:Milonni, Peter.jpg|thumb|x300px|Prof. Milonni, Peter (Univ. of Rochester)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Milonni, Peter]] (Univ. of Rochester)
* Date: November 14, 2017
* Place: Science Building 433

Following a brief review of how the concept of zero-point energy first appeared in quantum theory, I will describe some of the evidence for electromagnetic zero-point energy and quantum field fluctuations. Attention will then be focused on fluctuation-dissipation relations which allow different physical interpretations of effects usually associated with changes in zero-point field energy, and which bear on the question of whether equations of motion determine commutation relations. Quantum Langevin equations with zero-point fluctuations and dissipation will be shown to lead straightforwardly to expressions for quantized electromagnetic fields in dissipative media. Implications of vacuum field fluctuations and zero-point energy will be discussed in the context of recent experiments on spontaneous parametric down-conversion and for a proposed experiment probing Planck-scale physics.

Zero-Point Energy, Fluctuations, and Dissipation: A (Mostly) Quantum-Optical Perspective

2017-11-17T01:21:00Z

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[[file:Kim, Sun Kee.jpg|thumb|x300px|Prof. Kim, Sun Kee (SNU)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Kim, Sun Kee]] (University of Rochester)
* Date: November 21, 2017
* Place: Science Building 433

무거운 물체와 가벼운 물체를 동시에 자유낙하 시키면 동시에 땅에 떨어질까? 지금은 모두 잘 알고 있는 이 간단한 질문에 대한 답은 갈릴레오가 실험을 하기 전까지는 분명하지 않았다. 그러면 반물질은 물질과 같이 떨어질까 ? 본 강연에서는 반물질의 자유낙하 실험을 통하여 이 질문에 답을 찾고자 하는 GBAR실험을 소개한다.

Milonni, Peter

2017-11-02T01:29:57Z

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[[file:Milonni, Peter.jpg|thumb|x300px|Prof. Milonni, Peter (University of Rochester)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Peter Milonni is a Professor of Physics (Research) at the Department of Physics and Astronomy, University of Rochester, USA. He is a theoretical physicist who deals with quantum optics, laser physics, quantum electrodynamics and the Casimir effect. He earned his PhD in 1974 at the University of Rochester. He then worked at the Air Force Weapons Laboratory from 1974 to 1977, then working at Perkin Elmer Company from 1977 to 1980. In 1980, he became Professor of Physics at the University of Arkansas; From 1986 to 1994 he was at the Los Alamos National Laboratory, where he became a fellow of the laboratory from 1994 onwards. He then had a research professorship at the University of Rochester.
Prof. Milonni is in on editorial boards of Progress in Optics, Contemporary Physics, Advances in Optics & Photonics and Physical Review Letters. He is also author of several textbooks and monographs including The Quantum Vacuum: An Introduction to Quantum Electrodynamics.
Prof. Milonni received the Max Born Award "For exceptional contributions to the fields of theoretical optics, laser physics and quantum mechanics, and for dissemination of scientific knowledge through authorship of a series of outstanding books" in 2008.

==Contributions==
* [[Zero-Point Energy, Fluctuations, and Dissipation: A (Mostly) Quantum-Optical Perspective]]

Milonni, Peter

2017-11-02T01:29:01Z

Windlight: Created page with "Prof. Milonni, Peter (University of Rochester) Category:Speakers Category:Colloquium Speakers Peter Milonni is a Professor of..."

[[file:Milonni, Peter.jpg|thumb|x300px|Prof. Milonni, Peter (University of Rochester)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Peter Milonni is a Professor of Physics (Research) at the Department of Physics and Astronomy, University of Rochester, USA. He is a theoretical physicist who deals with quantum optics, laser physics, quantum electrodynamics and the Casimir effect. He earned his PhD in 1974 at the University of Rochester. He then worked at the Air Force Weapons Laboratory from 1974 to 1977, then working at Perkin Elmer Company from 1977 to 1980. In 1980, he became Professor of Physics at the University of Arkansas; From 1986 to 1994 he was at the Los Alamos National Laboratory, where he became a fellow of the laboratory from 1994 onwards. He then had a research professorship at the University of Rochester.
Prof. Milonni is in on editorial boards of Progress in Optics, Contemporary Physics, Advances in Optics & Photonics and Physical Review Letters. He is also author of several textbooks and monographs including The Quantum Vacuum: An Introduction to Quantum Electrodynamics.
Prof. Milonni received the Max Born Award "For exceptional contributions to the fields of theoretical optics, laser physics and quantum mechanics, and for dissemination of scientific knowledge through authorship of a series of outstanding books" in 2008.

==Contributions==
* [Editing Zero-Point Energy, Fluctuations, and Dissipation: A (Mostly) Quantum-Optical Perspectives]]

File:Milonni, Peter.jpg

2017-10-24T04:35:20Z

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Zero-Point Energy, Fluctuations, and Dissipation: A (Mostly) Quantum-Optical Perspective

2017-10-24T04:35:05Z

Windlight: Created page with "Prof. Milonni, Peter (University of Rochester) Category:Colloquiums Category:Seminars * Speaker: Prof. Milonni, Peter (Uni..."

[[file:Milonni, Peter.jpg|thumb|x300px|Prof. Milonni, Peter (University of Rochester)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Milonni, Peter]] (University of Rochester)
* Date: November 14, 2017
* Place: Science Building 433

Following a brief review of how the concept of zero-point energy first appeared in quantum theory, I will describe some of the evidence for electromagnetic zero-point energy and quantum field fluctuations. Attention will then be focused on fluctuation-dissipation relations which allow different physical interpretations of effects usually associated with changes in zero-point field energy, and which bear on the question of whether equations of motion determine commutation relations. Quantum Langevin equations with zero-point fluctuations and dissipation will be shown to lead straightforwardly to expressions for quantized electromagnetic fields in dissipative media. Implications of vacuum field fluctuations and zero-point energy will be discussed in the context of recent experiments on spontaneous parametric down-conversion and for a proposed experiment probing Planck-scale physics.

No, You-Shin

2017-10-24T01:33:30Z

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[[file:No, You-Shin.jpg|thumb|x300px|Prof. No, You-Shin (Konkuk Univ)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Assistant professor in Department of Physics at Konkuk University

==Education==
*Ph.D. Physics, Department of Physics, Korea University, 2014
*M.S. Physics, Department of Physics, Korea University, 2010
*B.S. Physics, Department of Physics, Korea University, 2008

==Professional Experiences==
*Postdoctoral fellow, Department of Chemistry & Chemical Biology Harvard University, 2014 - 2017

==Contributions==
[[Active Nanophotonic and Optoelectronic Devices]]

Jang, Jae-Won

2017-10-23T06:57:27Z

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[[file:Jang, Jae-Won.jpg|thumb|x300px| Prof. Jang, Jae-Won (Pukyong National University)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Dr. Jang received his Ph.D. in Physics from the Korea University. Dr. Jang was a postdoctoral researcher in Dept. of Chemistry at Northwestern University. From 2008 to 2011, he was an Application Scientist at Nanoink, Inc. (Skokie, Illinois, U.S.A.). Then he joined in department of physics in Pukyong national university as an assistant professor in 2011, and he is promoted as an associate professor since 2015. Now, he is the chair of the department.

Dr. Jang has published more than 63 research papers in the area of solid state physics, materials, and nanotechnology, including high ranked research journals: ACS Nano, Nano Letters, Advanced Functional Materials, etc. His research has focused on light-matter interactive phenomena using nanofabrication/characterization tools and development of advanced functional device including plasmonic sensor and nanomaterial FET.

Dr. Jang’s lab has been carried out lots of collaboration works with researchers in the world. For examples, he has is the recipient of the Korea-Japan (NRF-JSPS) basic scientific research program 2013-2015, Korea-USA (NRF-AOARD) nanoscience joint research grant 2013-2017, and Eu-Korea exchange scholar program (NRF)2016.

==Contributions==
* [[Investigation on metal nanostructure/semiconductor junction and its applications]]

Jang, Jae-Won

2017-10-23T06:56:59Z

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Investigation on metal nanostructure/semiconductor junction and its applications

2017-10-23T06:55:50Z

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[[file:Jang, Jae-Won.jpg|thumb|x300px| Prof. Jang, Jae-Won (Pukyong National University)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Jang, Jae-Won]] (Pukyong National University)
* Date: November 07, 2017
* Place: Science Building 433

Hybrid nanostructures have attracted attention due to many novel properties that are lacking in any one material. Among hybrid nanostructures, semiconductor with metal nanomaterials have been more exploited because metals and semiconductors have diﬀerent properties that, in combination, result in unique electrical and optical properties. Localized surface plasmon resonance (LSPR), which is one of the novel properties of metal nanoparticles (NPs), has been used as a good strategy for increasing the opto-electric performance in semiconductors. In this presentation, improvement of the opto-electronic properties of non-single crystallized nanowire (NW) devices with space charges generated by LSPR is demonstrated. The photocurrent and spectral response of single polypyrrole (PPy) NW devices are increased by electrostatically attached Ag nanoparticles (NPs). In particular, it is also proved the space charge generation by LSPR of Ag NPs by means of characterizing current–voltage (J–V) dependence and finite-diﬀerential time domain (FDTD) simulation on the NW devices. Moreover, semiconductor type dependent role of metal NP in metal NPs decorated semiconductor NW is demonstrated by using light irradiated Kevin probe force microscopy.

File:Jang, Jae-Won.jpg

2017-10-23T06:55:05Z

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Investigation on metal nanostructure/semiconductor junction and its applications

2017-10-23T06:54:02Z

Windlight: Created page with " Prof. Jang, Jae-Won (Pukyong National University) Category:Colloquiums Category:Seminars * Speaker: Prof. No, You-Shin (Ko..."

[[file:Jang, Jae-Won.jpg|thumb|x300px| Prof. Jang, Jae-Won (Pukyong National University)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[No, You-Shin]] (Konkuk Univ)
* Date: November 07, 2017
* Place: Science Building 433

Hybrid nanostructures have attracted attention due to many novel properties that are lacking in any one material. Among hybrid nanostructures, semiconductor with metal nanomaterials have been more exploited because metals and semiconductors have diﬀerent properties that, in combination, result in unique electrical and optical properties. Localized surface plasmon resonance (LSPR), which is one of the novel properties of metal nanoparticles (NPs), has been used as a good strategy for increasing the opto-electric performance in semiconductors. In this presentation, improvement of the opto-electronic properties of non-single crystallized nanowire (NW) devices with space charges generated by LSPR is demonstrated. The photocurrent and spectral response of single polypyrrole (PPy) NW devices are increased by electrostatically attached Ag nanoparticles (NPs). In particular, it is also proved the space charge generation by LSPR of Ag NPs by means of characterizing current–voltage (J–V) dependence and finite-diﬀerential time domain (FDTD) simulation on the NW devices. Moreover, semiconductor type dependent role of metal NP in metal NPs decorated semiconductor NW is demonstrated by using light irradiated Kevin probe force microscopy.

No, You-Shin

2017-10-23T06:16:13Z

Windlight: Created page with "Prof. No, You-Shin (Konkuk Univ) Category:Colloquiums Category:Seminars Assistant professor in Department of Physics at Konkuk..."

[[file:No, You-Shin.jpg|thumb|x300px|Prof. No, You-Shin (Konkuk Univ)]]
[[Category:Colloquiums]]
[[Category:Seminars]]

Assistant professor in Department of Physics at Konkuk University

==Education==
*Ph.D. Physics, Department of Physics, Korea University, 2014
*M.S. Physics, Department of Physics, Korea University, 2010
*B.S. Physics, Department of Physics, Korea University, 2008

==Professional Experiences==
*Postdoctoral fellow, Department of Chemistry & Chemical Biology Harvard University, 2014 - 2017

==Contributions==
[[Active Nanophotonic and Optoelectronic Devices]]

File:No, You-Shin.jpg

2017-10-23T05:23:06Z

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Active Nanophotonic and Optoelectronic Devices

2017-10-23T05:21:13Z

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[[file:No, You-Shin.jpg|thumb|x300px|Prof. No, You-Shin (Konkuk Univ)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[No, You-Shin]] (Konkuk Univ)
* Date: October 31, 2017
* Place: Science Building 433

Low-dimensional nanomaterials and nanostructures are emerging building blocks in photonics, nanoelectronics and bioelectronics. In particular, semiconductor nanoscale architectures that can be controllably synthesized or fabricated into different morphologies with tunable electrical and optical properties enable the generation and detection of electrical and optical signals with high sensitivity and spatial resolution. In this talk, I will discuss various active optoelectronic devices using top-down-fabricated and bottom-up-synthesized semiconductors. First, I demonstrate the efficient integration of an electrically driven nanowire light source with metallic tapered nanostrips, exhibiting the generation and propagation of surface plasmons as well as the subwavelength-scale nanofocusing of light. Second, I will present a new nanowire structure in which the material and dopant are modulated specifically at only one end of nanowires, termed tip-modulated nanowires. Characterization of the electrical and optical properties of devices configured from these new structures demonstrates the capability of tip-localized electronic and photonic detection. Lastly, I will discuss the recent advances in shape-controlled deterministic assembly techniques of one-dimensional nanomaterials, enabling the realization of key photonic elements. Our demonstrations of active semiconductor nanodevices provide a substantial opportunity in areas ranging from nanoscale light manipulation, optoelectronic signal detection to biological and chemical sensing.

Active Nanophotonic and Optoelectronic Devices

2017-10-23T05:20:32Z

Windlight: Created page with "Prof. No, You-Shin (Konkuk Univ) Category:Colloquiums Category:Seminars * Speaker: Prof. Kim, Jehyung (UNIST) * Date: Octobe..."

[[file:No, You-Shin.jpg|thumb|x300px|Prof. No, You-Shin (Konkuk Univ)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Kim, Jehyung]] (UNIST)
* Date: October 31, 2017
* Place: Science Building 433

Low-dimensional nanomaterials and nanostructures are emerging building blocks in photonics, nanoelectronics and bioelectronics. In particular, semiconductor nanoscale architectures that can be controllably synthesized or fabricated into different morphologies with tunable electrical and optical properties enable the generation and detection of electrical and optical signals with high sensitivity and spatial resolution. In this talk, I will discuss various active optoelectronic devices using top-down-fabricated and bottom-up-synthesized semiconductors. First, I demonstrate the efficient integration of an electrically driven nanowire light source with metallic tapered nanostrips, exhibiting the generation and propagation of surface plasmons as well as the subwavelength-scale nanofocusing of light. Second, I will present a new nanowire structure in which the material and dopant are modulated specifically at only one end of nanowires, termed tip-modulated nanowires. Characterization of the electrical and optical properties of devices configured from these new structures demonstrates the capability of tip-localized electronic and photonic detection. Lastly, I will discuss the recent advances in shape-controlled deterministic assembly techniques of one-dimensional nanomaterials, enabling the realization of key photonic elements. Our demonstrations of active semiconductor nanodevices provide a substantial opportunity in areas ranging from nanoscale light manipulation, optoelectronic signal detection to biological and chemical sensing.

Park, Cheol-Hwan

2017-09-26T08:00:11Z

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[[file:Prof. Park, Cheol-Hwanl.jpg|thumb|x300px|Prof. Park, Cheol-Hwan (Seoul National Univ)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Cheol-Hwan Park got his bachelor’s degree in 2000 from the department of physics, Seoul National University. He studied first-principles electronic structure methods during his doctoral study in the physics department of UC Berkeley where he got the PhD in 2009. He did his postdoc study in the materials department in Oxford University and in BOSCH research center in Cambridge, USA before joining the physics department of Seoul National University as a faculty member in Fall 2012. Cheol-Hwan Park is interested in investigating the interplay in real materials between charge, spin, orbital and photonic degrees of freedom from first-principles calculations.

==Contributions==
* [[Hidden spin and orbital polarizations]]

Park, Cheol-Hwan

2017-09-26T07:59:36Z

Windlight: Created page with "Dr. Kim, Hyochul (Samsung) Category:Speakers Category:Colloquium Speakers Cheol-Hwan Park got his bachelor’s degree in 20..."

[[file:Dr. Kim, Hyochul.jpg|thumb|x300px|Dr. Kim, Hyochul (Samsung)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Cheol-Hwan Park got his bachelor’s degree in 2000 from the department of physics, Seoul National University. He studied first-principles electronic structure methods during his doctoral study in the physics department of UC Berkeley where he got the PhD in 2009. He did his postdoc study in the materials department in Oxford University and in BOSCH research center in Cambridge, USA before joining the physics department of Seoul National University as a faculty member in Fall 2012. Cheol-Hwan Park is interested in investigating the interplay in real materials between charge, spin, orbital and photonic degrees of freedom from first-principles calculations.

==Contributions==
* [[Hidden spin and orbital polarizations]]

File:Prof. Park, Cheol-Hwanl.jpg

2017-09-26T07:55:39Z

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Hidden spin and orbital polarizations

2017-09-26T07:54:59Z

Windlight: Created page with "Prof. Park, Cheol-Hwan (Seoul National Univ) Category:Colloquiums Category:Seminars * Speaker: Prof. Park, Cheol-Hw..."

[[file:Prof. Park, Cheol-Hwanl.jpg|thumb|x300px|Prof. Park, Cheol-Hwan (Seoul National Univ)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Park, Cheol-Hwan]] (Seoul National Univ)
* Date: October 10, 2017
* Place: Science Building 433

===Abstract===

It has been widely accepted that in a crystal with time-reversal and inversion symmetry the electronic band is always double degenerate. Recently, it was found that even in centrosymmetric, non-magnetic materials, a Bloch state can have a local spin polarization, so-called hidden spin polarization. This discovery has significantly broadened the scope of spintronics. We find that the hidden orbital polarization (the orbital version of hidden polarization) is much more abundant in nature than the hidden spin polarization and it induces the hidden spin polarization if there is enough spin-orbit coupling. In this colloquium, I will briefly explain the spin-orbit coupling in solids, hidden spin polarization and hidden orbital polarization.

===References ===

# X. Zhang et al., “Hidden spin polarization in inversion-symmetric bulk crystals,” Nat. Phys. 10, 387 (2014).<br/>
# J. H. Ryoo and C.-H. Park, “Hidden orbital polarization in diamond, Si, Ge, GaAs and layered materials,” NPG Asia Materials 9, e382 (2017).<br/>

Integrated quantum photonics based on solid-state quantum system

2017-09-19T07:01:29Z

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[[file:Kim, Jehyung.jpg|thumb|x300px|Prof. Kim, Jehyung (UNIST)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Kim, Jehyung]] (UNIST)
* Date: September 26, 2017
* Place: Pi-Ville Auditorium

Future quantum information processing relies on solid-state quantum systems that integrate multiple quantum emitters, waveguides, beamsplitters, and detectors on the same chip, and therefore all quantum operations are efficiently possible on-a-chip. Semiconductor quantum dots have attracted much attention as a bright source of quantum light with high single photon purity and indistinguishability. However, the solid-state quantum emitters, man-made quantum structures, also have many problems such as low photon collection efficiency, randomness in their frequency and position, and strong interaction with the environment which limit them to be used for practical applications. In this seminar, I present recent research on the quantum dots in photonic crystal structures for quantum photonics applications. Photonic crystal structures such as cavities and waveguides can manipulate the photonic density of states and form localized photonic modes, enhancing both spontaneous emission rate and coupling efficiency of the coupled emitters. In addition, it is possible to apply several local tuning techniques such as local strain, heating, and electric fields on a photonic crystal membrane, so they provide an excellent platform for controlling the frequency of individual emitters. By combining these two engineered electronic and photonic structures, i.e., quantum dots and photonic crystals, we demonstrate multiple, identical quantum emitters on-a-chip that generate indistinguishable single photons. Also, we demonstrate super-radiant emission from two quantum dots on the same waveguide, a signature of on-chip quantum interaction between separated quantum emitters. Finally, I show a strong potential of these solid-state quantum systems for future scalable, integrated quantum photonic devices.

Kim, Jehyung

2017-09-18T02:38:16Z

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[[file:Kim, Jehyung.jpg|thumb|x300px|Prof. Kim, Jehyung (UNIST)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Dr. Kim completed his undergraduate studies in Department of Physics from Korea University in 2007 and obtained Ph.D. degree from Department of Physics, KAIST, South Korea in 2014.
He was a postdoc (2014) at the same group where he received his Ph.D in 2014. After then he worked as a postdoc researcher in Prof. Edo Waks' group at University of Maryland between 2014~2017.
Aug. 2017 he have joined at UNIST, department of Physics and school of Natural Science as an assistant professor.
He has expertise in optical characterization, fabrication, and manipulation of solid-state quantum emitters such as quantum dots. His expertise mainly focuses on solid-state quantum photonics for fundamental studies of quantum optics and realization of integrated quantum devices.

==Contributions==
* [[Integrated quantum photonics based on solid-state quantum system]]

Kim, Jehyung

2017-09-18T02:37:46Z

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[[file:Kim, Jehyung.jpg|thumb|x300px|Prof. Kim, Jehyung (UNIST)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Dr. Kim completed his undergraduate studies in Department of Physics from Korea University in 2007 and obtained Ph.D. degree from Department of Physics, KAIST, South Korea in 2014.
He was a postdoc (2014) at the same group where he received his Ph.D in 2014. After then he worked as a postdoc researcher in Prof. Edo Waks' group at University of Maryland between 2014~2017.
Aug. 2017 he have joined at UNIST, department of Physics and school of Natural Science as an assistant professor.
He has expertise in optical characterization, fabrication, and manipulation of solid-state quantum emitters such as quantum dots. His expertise mainly focuses on solid-state quantum photonics for fundamental studies of quantum optics and realization of integrated quantum devices.

==Contributions==
* [[Editing Integrated quantum photonics based on solid-state quantum system]]

File:Kim, Jehyung.jpg

2017-09-18T02:31:15Z

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Integrated quantum photonics based on solid-state quantum system

2017-09-18T02:30:19Z

Windlight: Created page with "Prof. Kim, Jehyung (UNIST) Category:Colloquiums Category:Seminars * Speaker: Prof. Kim, Jehyung (UNIST) * Date: September 26..."

[[file:Kim, Jehyung.jpg|thumb|x300px|Prof. Kim, Jehyung (UNIST)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Kim, Jehyung]] (UNIST)
* Date: September 26, 2017
* Place: Pi-Ville auditorium

Future quantum information processing relies on solid-state quantum systems that integrate multiple quantum emitters, waveguides, beamsplitters, and detectors on the same chip, and therefore all quantum operations are efficiently possible on-a-chip. Semiconductor quantum dots have attracted much attention as a bright source of quantum light with high single photon purity and indistinguishability. However, the solid-state quantum emitters, man-made quantum structures, also have many problems such as low photon collection efficiency, randomness in their frequency and position, and strong interaction with the environment which limit them to be used for practical applications. In this seminar, I present recent research on the quantum dots in photonic crystal structures for quantum photonics applications. Photonic crystal structures such as cavities and waveguides can manipulate the photonic density of states and form localized photonic modes, enhancing both spontaneous emission rate and coupling efficiency of the coupled emitters. In addition, it is possible to apply several local tuning techniques such as local strain, heating, and electric fields on a photonic crystal membrane, so they provide an excellent platform for controlling the frequency of individual emitters. By combining these two engineered electronic and photonic structures, i.e., quantum dots and photonic crystals, we demonstrate multiple, identical quantum emitters on-a-chip that generate indistinguishable single photons. Also, we demonstrate super-radiant emission from two quantum dots on the same waveguide, a signature of on-chip quantum interaction between separated quantum emitters. Finally, I show a strong potential of these solid-state quantum systems for future scalable, integrated quantum photonic devices.

Braun, Daniel

2017-09-05T06:02:10Z

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[[file:Prof. Braun, Daniel.jpg|thumb|x300px|Prof. Braun, Daniel (Universität Tübingen, Germany)]][[Category:Speakers]]
[[Category:Colloquium Speakers]]

Daniel Braun is a Full Professor of Theoretical Physics and heading the Theoretical Quantum Optics group at the University of Tuebingen in Germany.

He was a Fullbright Scholar at the State University of New York at Stonny Brook, USA, where he got his Master of Arts in Physics in 1990. He did his Diploma of Physics with Ulrich Weiss at the University of Stuttgart in Germany, and finished it with the highest honors in 1992. His thesis title was "Investigation of the Dynamics of Rotational Tunneling Systems". Then he moved to Paris in France to pursue his PhD in Physics with Gilles Montambaux at the University of Paris XI. In 1995, he acquired his PhD with honors "très honorable” (or, magna cum laude in Latin). His thesis was entitled "Spectral Properties of Disordered Mesoscopic Conductors".

He started his independent research career with an Assistant Professorship at the Institute of Theoretical Physics, University of Essen, Germany in 1995 and got his Habilitation there in 2000. From 2000 to 2004, he worked as an R&D Engineer for Infenion Technologies, an industrial company based in Munich, Germany. In 2004, he returned to academia as a Full Professor of Theoretical Physics at University of Paul Sabatier in Toulouse, France. About a decade later, in 2013, he moved to the University of Tuebingen for a W3 position.

Apart from the aforementioned awards and distinctions, he proved himself talented in theoretical physics through his high school days with 2nd and 3rd Prizes in the German National Mathematics Competition in 1985 and 1986, respectively. His devotion to education of young scientists was awarded by the Best PhD Presentation of the "Ecole Doctorale de Toulouse" (with 1000 Euros prize money) for his PhD student Ludovic Arnaud in 2009.

His research works are internationally well recognized in several fields of physics such as quantum information theory, quantum optics, quantum metrology, mesoscopic solid-state physics, quantum chaos, and spintronics. He has published more than 80 articles in peer-reviewed journals and has been granted 19 patents. He has enjoyed many invitations for Visiting Scholar positions at the University Waterloo, Joint Quantum Institute (NIST, Gaithersburg), Texas A&M University at Doha, Qatar, University of Maryland at College Part and several others as well as Korea University.

==Contributions==
* [[Ultimate Limits of Quantum Measurements]]

Ultimate Limits of Quantum Measurements

2017-09-04T08:25:08Z

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[[file:Prof. Braun, Daniel.jpg|thumb|x300px|Prof. Braun, Daniel (Universität Tübingen, Germany)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[Braun, Daniel]] (Universität Tübingen, Germany)
* Date: September 12, 2017
* Place: Science Building 433

Quantum enhanced measurements aim at measuring physical quantities with increased precision by using quantum mechanical effects. At the heart of most theoretical efforts in the field lies quantum parameter estimation theory, which provides a powerful and general framework for analyzing the performance of measurements in the quantum realm. It allows one to set benchmarks for a given measurement-setup, to develop strategies for improving measurements, and even to assess the falsifiability of some predictions of advanced theories such as quantum-gravity candidates.

The examples discussed range from the sensitivity of artificial noses, the measurement of the chemical potential of cold atoms, and techniques of Hamiltonian-engineering such as "signal-flooding", to measurements of the speed of light and its implications what we can possibly know about the metric of space-time.

Braun, Daniel

2017-09-04T08:24:12Z

Windlight:

[[file:Prof. Braun, Daniel.jpg|thumb|x300px|Prof. Braun, Daniel (Universität Tübingen, Germany)]][[Category:Speakers]]
[[Category:Colloquium Speakers]]

Daniel Braun is a Full Professor of Theoretical Physics and heading the Theoretical Quantum Optics group at the University of Tuebingen in Germany.

He was a Fullbright Scholar at the State University of New York at Stonny Brook, USA, where he got his Master of Arts in Physics in 1990.
He did his Diploma of Physics with Ulrich Weiss at the University of Stuttgart in Germany, and finished it with the highest honors in 1992. His thesis title was "Investigation of the Dynamics of Rotational Tunneling Systems".
Then he moved to Paris in France to pursue his PhD in Physics with Gilles Montambaux at the University of Paris XI. In 1995, he acquired his PhD
with honors "très honorable” (or, magna cum laude in Latin). His thesis was entitled "Spectral Properties of Disordered Mesoscopic Conductors".

He started his independent research career with an Assistant Professorship at the Institute of Theoretical Physics, University of Essen, Germany in 1995 and got his Habilitation there in 2000.
From 2000 to 2004, he worked as an R&D Engineer for Infenion Technologies, an industrial company based in Munich, Germany.
In 2004, he returned to academia as a Full Professor of Theoretical Physics at University of Paul Sabatier in Toulouse, France. About a decade later, in 2013, he moved to the University of Tuebingen for a W3 position.

Apart from the aforementioned awards and distinctions, he proved himself talented in theoretical physics through his high school days with 2nd and 3rd Prizes in the German National Mathematics Competition in 1985 and 1986, respectively. His devotion to education of young scientists was awarded by the Best PhD Presentation of the "Ecole Doctorale de Toulouse" (with 1000 Euros prize money) for his PhD student Ludovic Arnaud in 2009.

His research works are internally well recognized in several fields of physics such as quantum information theory, quantum thermodynamics, quantum optics, mesoscopic solid-state physics, quantum chaos, and spintronics. He has published more than 80 articles in peer-reviewed journals and has been granted 19 patents. He has enjoyed many invitations for Visiting Scholar positions at the University Waterloo, Joint Quantum Institute (NIST, Gaithersburg), Texas A&M University at Doha, Qatar, University of Maryland at College Part and several others as well as Korea University.

==Contributions==
* [[Ultimate Limits of Quantum Measurements]]

Braun, Daniel

2017-09-04T08:21:37Z

Windlight:

[[file:Prof. Braun, Daniel (Universität Tübingen, Germany).jpg|thumb|x300px|Prof. Braun, Daniel (Universität Tübingen, Germany)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Daniel Braun is a Full Professor of Theoretical Physics and heading the Theoretical Quantum Optics group at the University of Tuebingen in Germany.

He was a Fullbright Scholar at the State University of New York at Stonny Brook, USA, where he got his Master of Arts in Physics in 1990.
He did his Diploma of Physics with Ulrich Weiss at the University of Stuttgart in Germany, and finished it with the highest honors in 1992. His thesis title was "Investigation of the Dynamics of Rotational Tunneling Systems".
Then he moved to Paris in France to pursue his PhD in Physics with Gilles Montambaux at the University of Paris XI. In 1995, he acquired his PhD
with honors "très honorable” (or, magna cum laude in Latin). His thesis was entitled "Spectral Properties of Disordered Mesoscopic Conductors".

He started his independent research career with an Assistant Professorship at the Institute of Theoretical Physics, University of Essen, Germany in 1995 and got his Habilitation there in 2000.
From 2000 to 2004, he worked as an R&D Engineer for Infenion Technologies, an industrial company based in Munich, Germany.
In 2004, he returned to academia as a Full Professor of Theoretical Physics at University of Paul Sabatier in Toulouse, France. About a decade later, in 2013, he moved to the University of Tuebingen for a W3 position.

Apart from the aforementioned awards and distinctions, he proved himself talented in theoretical physics through his high school days with 2nd and 3rd Prizes in the German National Mathematics Competition in 1985 and 1986, respectively. His devotion to education of young scientists was awarded by the Best PhD Presentation of the "Ecole Doctorale de Toulouse" (with 1000 Euros prize money) for his PhD student Ludovic Arnaud in 2009.

His research works are internally well recognized in several fields of physics such as quantum information theory, quantum thermodynamics, quantum optics, mesoscopic solid-state physics, quantum chaos, and spintronics. He has published more than 80 articles in peer-reviewed journals and has been granted 19 patents. He has enjoyed many invitations for Visiting Scholar positions at the University Waterloo, Joint Quantum Institute (NIST, Gaithersburg), Texas A&M University at Doha, Qatar, University of Maryland at College Part and several others as well as Korea University.

==Contributions==
* [[Ultimate Limits of Quantum Measurements]]

Braun, Daniel

2017-09-04T08:17:10Z

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[[file:Prof. Braun, Daniel.jpg|thumb|x300px|Prof. Braun, Daniel (Universität Tübingen, Germany)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Daniel Braun is a Full Professor of Theoretical Physics and heading the Theoretical Quantum Optics group at the University of Tuebingen in Germany.

He was a Fullbright Scholar at the State University of New York at Stonny Brook, USA, where he got his Master of Arts in Physics in 1990.
He did his Diploma of Physics with Ulrich Weiss at the University of Stuttgart in Germany, and finished it with the highest honors in 1992. His thesis title was "Investigation of the Dynamics of Rotational Tunneling Systems".
Then he moved to Paris in France to pursue his PhD in Physics with Gilles Montambaux at the University of Paris XI. In 1995, he acquired his PhD
with honors "très honorable” (or, magna cum laude in Latin). His thesis was entitled "Spectral Properties of Disordered Mesoscopic Conductors".

He started his independent research career with an Assistant Professorship at the Institute of Theoretical Physics, University of Essen, Germany in 1995 and got his Habilitation there in 2000.
From 2000 to 2004, he worked as an R&D Engineer for Infenion Technologies, an industrial company based in Munich, Germany.
In 2004, he returned to academia as a Full Professor of Theoretical Physics at University of Paul Sabatier in Toulouse, France. About a decade later, in 2013, he moved to the University of Tuebingen for a W3 position.

Apart from the aforementioned awards and distinctions, he proved himself talented in theoretical physics through his high school days with 2nd and 3rd Prizes in the German National Mathematics Competition in 1985 and 1986, respectively. His devotion to education of young scientists was awarded by the Best PhD Presentation of the "Ecole Doctorale de Toulouse" (with 1000 Euros prize money) for his PhD student Ludovic Arnaud in 2009.

His research works are internally well recognized in several fields of physics such as quantum information theory, quantum thermodynamics, quantum optics, mesoscopic solid-state physics, quantum chaos, and spintronics. He has published more than 80 articles in peer-reviewed journals and has been granted 19 patents. He has enjoyed many invitations for Visiting Scholar positions at the University Waterloo, Joint Quantum Institute (NIST, Gaithersburg), Texas A&M University at Doha, Qatar, University of Maryland at College Part and several others as well as Korea University.

==Contributions==
* [[Ultimate Limits of Quantum Measurements]]

File:Prof. Braun, Daniel.jpg

2017-09-04T06:39:59Z

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Ultimate Limits of Quantum Measurements

2017-09-04T06:34:37Z

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[[file:Prof. Braun, Daniel.jpg|thumb|x300px|Prof. Braun, Daniel (Universität Tübingen, Germany)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Prof. [[ Braun, Danie]] (Universität Tübingen, Germany)
* Date: September 12, 2017
* Place: Science Building 433

Quantum enhanced measurements aim at measuring physical quantities with increased precision by using quantum mechanical effects. At the heart of most theoretical efforts in the field lies quantum parameter estimation theory, which provides a powerful and general framework for analyzing the performance of measurements in the quantum realm. It allows one to set benchmarks for a given measurement-setup, to develop strategies for improving measurements, and even to assess the falsifiability of some predictions of advanced theories such as quantum-gravity candidates.

The examples discussed range from the sensitivity of artificial noses, the measurement of the chemical potential of cold atoms, and techniques of Hamiltonian-engineering such as "signal-flooding", to measurements of the speed of light and its implications what we can possibly know about the metric of space-time.

초전도 양자컴퓨터

2017-05-23T00:43:55Z

Windlight:

[[file:Dr. Chong, Yonuk.jpg|thumb|x300px|Dr. Chong, Yonuk (KRISS)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Dr. [[Chong, Yonuk]] (KRISS)
* Date: May 23, 2017
* Place: Science Building 433

양자역학적 현상을 직접적으로 계산에 활용하는 양자컴퓨터는, 처음에는 물리학자들의 아이디어에서 출발하였지만 지금은 생각처럼 먼 미래의 기술이 아니라 인터넷으로 접속해서 클라우드에서 사용할 수 있는 간단한 양자컴퓨터가 등장한 정도에 이르렀다. 본 강의에서는 양자컴퓨터를 구현하는 방법 중 가장 유망하다고 여겨지는 초전도 소자 기반의 양자컴퓨터 기술을 중심으로, 현재 전 세계적으로 눈부신 속도로 진행되고 있는 양자컴퓨터 개발에 관한 이야기를 풀어나가려 한다.

Lee, Sangyun

2017-05-22T01:56:39Z

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[[file:Dr. Lee, Sangyun.jpg|thumb|x300px|Dr. Lee, Sangyun (KIST)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

Sang-Yun Lee is a senior researcher at Korea Institute of Science and Technology (KIST). He received his Bachelor and Master degree in Physics from Korea University in 1999 and 2001, respectively, and PhD in Physics from the University of Utah in USA at 2011. During his MS, he joined Prof. Joo’s group where he studied physical properties of conducting polymer by investigating charge transport and electron spin resonance. For his PhD, he continued studying electron spin resonance on various defect states in polymer and silicon in Prof. Boehme’s group. After his PhD, he joined Prof. Wrachtrup’s group in University of Stuttgart in Germany in 2011 as a postdoctoral researcher. In Stuttgart, he investigated spin qubits based on defects in diamond and silicon carbide. In 2016, he started working as a senior researcher at the Center for Quantum Information in KIST. Currently, he focuses on developing integrated quantum computing devices using the defect based qubits in diamond.

==Contributions==
* [[Quantum information processing with defect based qubits in solids]]

File:Dr. Lee, Sangyun.jpg

2017-05-22T01:53:45Z

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Quantum information processing with defect based qubits in solids

2017-05-22T01:52:58Z

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[[file:Dr. Lee, Sangyun.jpg|thumb|x300px|Dr. Lee, Sangyun (KIST)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Dr. [[Lee, Sangyun]] (KIST)
* Date: May 30, 2017
* Place: Science Building 433

Spins in magnetically diluted media can serve as quantum bits (qubits) for quantum information processing. Among many spin qubit candidates, defect spins in wide bandgap semiconductors have shown significant advance in recent years. One of the well-known leading contenders is the nitrogen-vacancy (NV) center in diamond. The long spin coherence time of both electron and nuclear spins even at the ambient conditions satisfies a prerequisite for qubits. The strong spin-dependent recombination in the NV center also allows an efficient spin polarization, which leads to qubit initialization and optical spin detection when the electron spin resonance is applied. The magnetic interaction between the NV center electronic spin and the adjacent nuclear spins provides a way to initialize and readout the single nuclear spins, which can be used as a long-lived quantum memory. Such quantum properties have been investigated to realize qubits, especially when the NV centers are strongly coupled to nuclear spins. Phenomenal progress so far includes quantum registers, quantum error correction, and spin-photon interfaces, to name but a few. In this presentation, I will provide a review for such demonstrations in the last decade. Because the scaling them to large-scale quantum registers is challenging, I’ll also introduce recent efforts to realize a large volume quantum network.

Chong, Yonuk

2017-05-18T06:14:09Z

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[[file:Dr. Chong, Yonuk.jpg|thumb|x300px|Dr. Chong, Yonuk (KRISS)]]
[[Category:Speakers]]
[[Category:Colloquium Speakers]]

==Education==
*Ph.D. Seoul National University, 1999
*M.S. Seoul National University, 1994
*B.S. Seoul National University, 1992

==Professional Experiences==
*Adjunct Professor, University of Science and Technology(UST), Korea, 2008-present
*Principal Research Scientist, KRISS, Daejeon, Korea, 2007-present
*Senior Research Scientist, KRISS, Daejeon, Korea, 2005-2007
*Postdoctoral Guest Researcher in NIST, Boulder, CO, USA, 2002-2005
*Postdoctoral Researcher in CSCMR, Seoul National University, 1999-2002
*Visiting Scientist, Forschungszentrum(KFA) Juelich, Germany, 1996-1997
*Visiting Student, ISTEC-SRL(Superconductor Research Laboratory), Japan, 1998
*Research Assistant, Seoul National University, 1992-1999
*Teaching Assistant, Seoul National Univerisy, 1992-1996

==Honor & Awards==
*Research scientist of the month, KRISS, 2009
*NIST EEEL Distinguished Associate Award, 2007
*DAAD(Deutcher Akademischer Austauschdienst) Scholarship, 1996-1997
*Graduated with Summa Cum Laude, Seoul National University, 1992
*Scholarship from the Korea Foundation for Advanced Studies, 1989-1991
*University Scholarship, Seoul National University, 1989-1991

==Contributions==
* [[초전도 양자컴퓨터]]

File:Dr. Chong, Yonuk.jpg

2017-05-18T05:56:31Z

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초전도 양자컴퓨터

2017-05-18T05:55:52Z

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[[file:Dr. Chong, Yonuk.jpg|thumb|x300px|Dr. Chong, Yonuk (KRISS)]]
[[Category:Colloquiums]]
[[Category:Seminars]]
* Speaker: Dr. [[Ahn, Sang-Hyeon]] (KASI)
* Date: May 23, 2017
* Place: Science Building 433

양자역학적 현상을 직접적으로 계산에 활용하는 양자컴퓨터는, 처음에는 물리학자들의 아이디어에서 출발하였지만 지금은 생각처럼 먼 미래의 기술이 아니라 인터넷으로 접속해서 클라우드에서 사용할 수 있는 간단한 양자컴퓨터가 등장한 정도에 이르렀다. 본 강의에서는 양자컴퓨터를 구현하는 방법 중 가장 유망하다고 여겨지는 초전도 소자 기반의 양자컴퓨터 기술을 중심으로, 현재 전 세계적으로 눈부신 속도로 진행되고 있는 양자컴퓨터 개발에 관한 이야기를 풀어나가려 한다.