Chang, Yue

Yue Chang is an associate researcher at the Beijing Academy of Quantum Information Sciences. She received her PhD from the Institute of Theoretical Physics, Chinese Academy of Sciences, and subsequently conducted postdoctoral research at the Max Planck Institute of Quantum Optics. Her current research focuses on quantum optics and its applications to quantum precision measurement, Rydberg-atom ensembles, X-ray quantum optics, and few-photon scattering.

Few-Photon Bound States in the Continuum

Bound states in the continuum (BICs) can confine photonic excitations in open systems without relying on conventional cavities or photonic band gaps, making them promising for long-lived quantum storage and few-photon control. In this talk, I will present our recent work on single- and two-photon BICs. For single-photon BICs, we develop a capture–reshape–release protocol based on temporal control of a giant atom coupled to a waveguide. For two-photon states, we establish a no-go theorem for interaction-active BICs supported by a single emitter. We then investigate two-photon quasi-BICs in giant-atom systems and determine how their decay rates scale with the system parameters.