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学术报告(20151111)An analogue system to simulate quantum dynamics outside
发布时间:2015-12-17

 

报告题目: An analogue system to simulate quantum dynamics outside a black hole
报告人: 余洪伟
报告人单位: 宁波大学
报告时间: 2015年11月11日(星期三)下午3:00
报告地点: 东七楼,四楼427会议室
邀请单位: 粒子与天体物理研究所          
报告摘要:                
  We study, in the framework of open quantum systems, the dynamics of a radially polarizable two-level atom in multi-polar coupling to fluctuating vacuum electromagnetic fields which is placed at a fixed radial distance outside a radiating Schwarzschild black hole, and analyze the transition rates between atomic energy levels and the steady state the atom is driven to. We find that the atom always thermalizes toward a steady state at an effective temperature between zero and the Hawking temperature of the black hole. Remarkably, the thermalization temperature depends on the transition frequency of the atom, so that atoms with different transition frequencies essentially thermalize to different temperatures. This counter-intuitive behavior is however in close analogy to what happens for a two-level atom in a stationary environment out of thermal equilibrium near a dielectric body of certain geometry and dielectric permittivity. Our results thereby suggest in principle a possible analogue system using engineered materials with certain desired dielectric properties to verify features of Hawking radiation in lab-top experiments.
报告人简介:                
  余洪伟教授,教育部高校物理学类专业教学指导委员会委员, 中国引力与相对论天体物理学会理事,教育部“长江学者与创新团队计划”“量子效应及其应用”创新团队带头人,全国百篇优秀博士论文指导教师,享受国务院政府特殊津贴。

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