题　目：From Superradiance Lattice to Topological Quantum Optics
报告人：Dawei Wang，Department of Physics and Astronomy, Texas A&M Universi
时　间：5月3日（周三 ），上午9:30
地　点：同济大学物理馆512

报告摘要：

Superradiance has grown into a major topic in quantum optics since Dicke’s seminal paper in 1954. Recently, timed Dicke states, the collective excitations of extended atomic ensembles by single photon absorption, have been found with interesting properties such as directional emissions and collective Lamb shifts. By combining the timed Dicke states with the electromagenetically induced transparency, we can construct a momentum-space tight-binding lattice, coined the superradiance lattice [1]. In this talk, I will introduce the basic concept of the superradiance lattice and its applications in quantum metrology [2] and optical diodes [3]. In particular, the Haldane model can be simulated in two dimensional superradiance lattices [4]. The same physics can be extended to a cavity QED system, simply a two-level system coupled with three cavities, where the chiral edge currents in a Fock-state lattices enables the preparation of Schrodinger cat states [5]. This study shows that the physics of topological insulators can be demonstrated in quantum optics systems and have important applications.

个人简介：

Research Associate Professor  in Department of Physics and Astronomy, Texas A&M University

 [1] D.-W. Wang, R.-B. Liu, S.-Y. Zhu and M.O. Scully, PRL 114, 043602 (2015)

[2] D.-W. Wang and M. O. Scully, PRL 113, 083601 (2014)

[3] D.-W. Wang, H.-T. Zhou, M.-J. Guo, J.-X. Zhang, J. Evers and S.-Y. Zhu, PRL 110, 093901 (2013)

[4] D.-W. Wang, H. Cai, L. Yuan, S.-Y. Zhu and R.-B. Liu, Optica 2, 712 (2015)

[5] D.-W. Wang, H. Cai, R.-B. Liu and M. O. Scully, PRL 116, 220502 (2016)