学术讲座第四十五讲

报告题目：Non-Markovian Giant Atoms                              
报 告 人：郭领阵 博士（Max Planck Institute for the Science of Ligh）                    
研究领域：量⼦光学，统计物理，凝聚态物理。
报告时间：2021年10月20日下午15：00
报告地点：量子楼410会议室

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.

[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) .

报告人简介：

      2001年至2013年，在北京师范大学物理系本科、硕士和博士，其中博士是李新奇教授和德国卡尔斯鲁厄理⼯学院 London奖得主Gord Schon联合培养。之后在德国卡尔斯鲁厄理⼯学院,瑞典查尔姆斯理⼯⼤学和德国马普光学研究所从事博士后、高级博士后研究工作。在Nature Physics，PRL, PRA等杂志发表论文20多篇。研究领域为量⼦光学；统计物理；凝聚态物理。