Self-ordering (and superradiance) in cavity quantum-electrodynamics

报告人
Farokh Mivehvar
头衔
研究员
单位
University of Innsbruck
时间
2025-12-09 (周二) 15:00
地点
中科大东区物质楼B804(HFNL科研楼南楼A712、中科大上海研究院新区2号楼B栋2518、济南量子院量子科学大厦1417室同步视频)
摘要

Speaker's Brief Introduction: Farokh Mivehvar 博士目前担任奥地利因斯布鲁克大学 (University of Innsbruck)理论物理研究所的 FWF 独立研究员(FWF Stand-alone Fellow)。Farokh Mivehvar 博士本科毕业于伊朗大不里士大学(University of Tabriz),随后在加拿大卡尔加里大学(University of Calgary)完成了研究生学业。此后,他前往奥地利因斯布鲁克大学从事博士后研究,主要致力于腔量子电动力学(Cavity QED)领域。Mivehvar 博士的研究兴趣广泛,横跨凝聚态物理、量子气体、量子光学以及量子精密测量等多个前沿领域。他在量子物质密度波调控,量子光诱导涌现准晶对称性 (Emergent Quasicrystalline Symmetry)以及重访“超辐射”(Superradiance)理论等方面取得了重要成果。

Abstract: "Self-ordering" -- the spontaneous emergence of order out of disorder and chaos under some critical conditions -- is a ubiquitous phenomenon not only in physics, but also in chemistry, biology, social sciences, and many other fields. The most well-known example in physics is the crystallization process, while the other commonly known general examples include the collective bird flocking and fish schooling. In this talk, I will discuss the basic physics of self-ordering in open atom-cavity quantum systems [1]. In these systems, self-ordering is normally accompanied by the so-called "superradiance", which I will also explain. In the end, I will present some of our new predictions for quantized vortex self-ordering in atom-cavity systems, which leads to the so-called "rotational superradiance".

[1] F. Mivehvar, F. Piazza, T. Donner, H. Ritsch,"Cavity QED with quantum gases: New paradigms in many-body physics", Advances in Physics 70 (1), 1-153 (2021).