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Experimental simulation of anti-parity-time symmetric Lorentz dynamics

创建于2019年04月30日 星期二作者 : 科研办 浏览量 :

主讲人:张成杰,苏州大学副教授
时  间:2019年5月9号10:00
地  点:物电学院A栋219
联系人:童庆军

 

 

讲座摘要:The recent experimental progress in parity-time (PT) symmetry has attracted great interest. However, compared with PT symmetry, there are only a few reported results on its counterpart, anti-PT symmetry, which would lead to new insights and applications. Experimentally simulating and demonstrating the properties of anti-PT symmetry is of particular interest. Here, we present experimental research for simulating the dynamics of bosonic Bogoliubov quasi-particles with anti-PT symmetry based on single photons generated from a point defect in a gallium nitride film. The dynamical evolution under a non-unitary operator is a continuous complex Lorentz transformation in a complex Minkowski space. The evolved states are located on hyperbolic curves, depending on the values of the new defined inner product, which remain invariant during the evolution. Three types of state, space-like, light-like, and time-like, which are analogous to those predicted by the special relativity, are demonstrated. The results of our work could be helpful to investigate the dynamics of quasi-particles in diverse systems and promote deep understanding of non-Hermitian quantum mechanics in open systems.

 

 

主讲人简介:张成杰,2005本科毕业于中国科学技术大学少年班系零零班。2010年于中国科学技术大学中国科学院量子信息重点实验室获得博士学位,导师为郭光灿院士、张永生副教授 。2010年至2014年间于新加坡国立大学量子科技研究中心从事博士后研究,合作导师是Choo Hiap Oh教授。2015年至今为苏州大学物理与科学技术学院副教授。主要研究方向包括:探测和度量量子关联,例如量子纠缠,量子失谐,非局域性等,量子开放系统的动力学和消相干研究,量子控制及量子计算等。在Nat. Commun., PRL, PRA等期刊发表论文三十余篇。