• 首页  学术科研> 正文
  • 查尔姆斯理工大学杜磊博士:Dressed interference effects and quantum information processing in giant superatoms

    发布者:梁栋  发布时间:2025-05-24  浏览次数:10

    报告题目:Dressed interference effects and quantum information processing in giant superatoms

    报 告 人:杜磊 博士(查尔姆斯理工大学)

    主 持 人:刘涛 教授

    报告时间:2025年5月27日(星期二)上午9:30pm

    报告地点:物理与光电学院18楼213报告厅

    主办单位:物理与光电学院

     

    报告摘要:

    Giant atoms—quantum emitters coupled to their environments at multiple spatial points—exhibit self-interference effects that profoundly modify the light-matter interactions. In this work, we introduce the concept of “giant superatoms” (GSs), i.e., composite systems consisting of two or more entangled atoms, collectively and nonlocally coupled to a waveguide through only one of them. Such systems host complex internal collective effects that can greatly extend the potential of giant-atom physics, while maintaining simple atom-field coupling structures. We reveal the dressed dynamics of GSAs and show how they lead to state-selective interference effects. In braided structures, GSAs support DF transfer and swapping of internal dressed states. This mechanism can be further generalized to create various highly entangled or complex superposition states. For separate GSAs, we demonstrate state-selective chiral emission, which facilitates high-fidelity entanglement distribution over long distances and controlled generation of multipartite entangled states, such as W-class states. These results open new avenues for designing hybrid quantum systems, where nonlocal light-matter interactions and internal degrees of freedom are harnessed as key resources for quantum technologies.

    1. L. Du, X. Wang, A. F. Kockum, and J. Splettstoesser, arXiv:2504.12942.

    2. A. F. Kockum, G. Johansson, and F. Nori, Phys. Rev. Lett. 120, 140404 (2014).

    3. X. Wang and H.-R. Li, Quantum Sci. Technol. 7, 035007 (2022).

    4. X. Wang, Jia-Qi Li, Zhihai Wang, Anton Frisk Kockum, Lei Du, Tao Liu, and Franco Nori, arXiv:2404.09829.

     

    报告人简介:

    杜磊,瑞典查尔姆斯理工大学博士后(MC2, Chalmers)。2019年毕业于东北师范大学物理学院,获理学硕士学位;2022年毕业于中国工程物理研究院北京计算科学研究中心,获理学博士学位,并于同年获得“北京市优秀毕业生”称号。研究方向主要包括波导/腔量子电动力学、拓扑光子学和腔光力学。截至目前,已在Phys. Rev. Lett. / Research / A、Commun. Phys.、Quantum Sci. Technol. 等国际知名期刊发表论文30余篇。

     


    «返回上一级学术科研