【时  间】2025年8月5日（星期二）14:00

【地  点】广东会院526报告厅

【主  持】刘玉龙副研究员 广东会计算研究部

【题  目】New progresses in Cavity and Waveguide Quantum Electrodynamics

【摘  要】In this presentation, I will introduce our recent works in the fields of cavity and waveguide quantum electrodynamics (QED). On the one hand, in the field of cavity QED, we proposed a new type of cavity QED system, which allows us to exponentially enhance the single-atom cooperativity parameter. It overcomes the Q-V trade-off, i.e., Q being directly proportional to V, in the conventional cavity QED systems. On the other hand, in the field of waveguide QED, we investigated the chiral interaction and disorder of qubit array induced strongly correlated photons. We found that chiral cavity-waveguide interaction or the disorder in the transition frequencies of qubits can induce photon antibunching, and especially nearly perfect photon blockade events. We also will introduce our recent work regarding the exotic long-range interaction and the associating quantum many-body phases in topological waveguide QED system. Our works is of fundamental interest in expanding the fields of cavity and waveguide QED, and has potential applications in the on-chip quantum information science and quantum simulation of strong correlated matters.

【报告人简介】吕新友，华中科技大学物理学院教授，博士生导师，国家自然科学基金“杰出青年基金”、“优秀青年基金”和湖北省“百人计划”获得者。主要从事腔广东会电动力学（QED）和腔光力学等方面的理论研究。