报告题目:Non-Markovian Giant Atoms (非马尔科夫巨原子)
报告人: 郭领阵 副教授(天津大学量子交叉研究中心)
报告时间:2023年05月19日(星期五)14:00-15:30
报告地点:北洋园校区49教210室(腾讯会议ID:368-4368-9521)
报告摘要:
In standard quantum optics, the (artificial) atom is usually treated as a point-like model and locally coupled to the photon/phonon modes. In recent years, however, the artificial atoms realized in the lab can be much larger than the wavelength of photon/phonon modes. This scenario has been implemented with superconducting qubits coupled to surface acoustic waves [1,2] or to meandering microwave transmission lines [3]. These large artificial quantum systems, which are called giant atoms, can be coupled to the resonator/waveguide in a non-local fashion via multiple coupling points. In this talk, I will introduce the recent developments in giant atoms and related study in quantum optics. Especially, I will discuss the highly non-Markovian dynamics of giant atom due to the deterministic time delays among the coupling points [2,4]. The nonMarkovianity gives rise to many novel phenomena, e.g., the oscillating bound states [5], which do not exist for small atoms.
报告人简介:
郭领阵,天津大学理学院副教授。在北京师范大学就读本科和研究生,期间在德国卡尔斯鲁厄理工大学联合博士培养两年,2013年获得博士学位。之后相继在德国卡尔斯鲁厄理工大学、瑞典查尔姆斯理工大学、德国马克斯·普朗克光学研究所从事博后研究工作。期间曾获得德国“卡尔·蔡司基金青年科学家”项目为期两年二十万欧元的资助,2022年受聘南京理工大学理学院紫金计划“青年教授”。2023年3月加入天津大学理学院量子交叉研究中心,任“北洋英才计划”副教授。迄今共发表27篇SCI论文,其中包括1篇Nature Physics,2篇PRL,1篇Communications Physics等一区文章,2018年以后引用超700次。受英国物理学会(IOP)出版社邀请,于2021年12月以唯一作者身份出版了一部约177页的学术专著《Phase Space Crystals》,是该领域国际上的第一部专著。
参考文献:
[1] P. Delsing et al., Science 346, 207 (2014).
[2] G. Andersson et al., Nature Physics 15, 1123 (2019).
[3] W. Oliver et al., Nature 583, 775-779 (2020).
[4] L. Guo et al., Phys. Rev. A 95 , 053821 (2017).
[5] L. Guo et al., Phys. Rev. Research 2, 043014 (2020).