报告题目: |
Time crystal in levitated systems |
报告人: |
尹璋琦 |
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清华大学交叉信息研究院量子信息中心助理研究员
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报告时间: |
2018-06-29 14:00 |
报告地点: |
物理系理科楼C302 |
主办单位: |
物理系 |
简介: |
Time crystal was proposed in 2012, and got a lot of attentions and disscussions. In 2017, discrete time crystal, which appeared in Floquet driving systems, was realized in time crystal. In this talk, I discuss the concept of time crystal and discrete time crystal, and briefly summarized our proposal of space-time crystal and time quasi-crystal in trapped ions systems. Inspired by this proposal, recently we find that the almost spontaneous dynamics appears near the ground state of Lipkin-Meshkov-Glick (LMG) model with a finite number of spins. We link this phenomena to quantum time crystal and time quasicrystal. Finally, we propose a scheme to realize an effective classical time crystal in an optically levitated charged nanosphere under modest magnetic field. The experimental feasibility is discussed.
尹璋琦，博士学位，清华大学交叉信息研究院量子信息中心助理研究员。1999年到2009年，在西安交通大学应用物理系学习，分别获得获物理学学士，硕士和博士学位。念博士期间曾在美国密歇根大学访问两年。2012年来清华工作之前，曾在中科院武汉物理与数学研究所和中国科学技术大学工作。研究兴趣包括光力学和量子信息科学等。 |
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