Mesoscopic research with Quantum Hall electronic interferometer

From QCLab
  • Speaker: Hyungkook Choi (Weizmann Institute of Science)
  • Date: December 6, 2014 17:00

The experimental realization of electronic interferometers constitutes a significant milestone in the field of mesoscopic physics. In particular, QH interferometers have allowed us to study some of the most fundamental and subtle issues of quantum physics, such as coherence, entanglement and complementarity. Moreover, being 2- dimensional systems, they are regarded as the most promising platform for the realization of anyonic and non-abelian quasi-particles. Anyons are exotic excitations predicted to obey fractional exchange statistics, which is different from that of fermions and bosons.

In this seminar, I will present a series of experiments of 'controlled dephasing' of electronic Mach-Zehnder interferometers (MZI) coupled to several types of which- path detectors. Furthermore, I will present the first implementation of an electronic quantum eraser, allowing us to examine the substantial principals of uncertainty and complementarity with electrons. Lastly, I will show some unique behavior of electron- bunching we came across on our journey to probe anyonic statistics.