光子气体量子相变对原子衰减率的影响  

The Effect of Quantum Phase Transition of Photon Gas on the Decay Rate of Atom

作　　者：王英 张建军 杨国晖[1] WANG Ying;ZHANG Jian-jun;YANG Guo-hui(Stchool of Physics and Information Engineering,Shanxi Normal University,linfen 041000,Shanxi,China)

机构地区：[1]山西师范大学物理与信息工程学院,山西临汾041000

出　　处：《山西师范大学学报（自然科学版）》2021年第2期13-16,共4页Journal of Shanxi Normal University(Natural Science Edition)

摘　　要：本文在二维非线性光学微腔中研究了光子的玻色-爱因斯坦凝聚(BEC),并研究了光子气体量子相变对原子衰减率的影响.我们发现,纯光子对凝聚相原子衰减率是温度依赖的,随着系统温度的升高,系统自由能增大,原子衰减率也相应变大.In this paper,the Bose-Einstein condensate(BEC)of photon is investigated inside a two-dimensional nonlinear optical microcavity,and we have also investigated the influence of quantum phase transition of photon gas on the decay rate of atom.It is found that in the pure photon pair condensate phase the decay rate of atom is temperature-dependent.As the temperature of the system increases,the free energy of the system will increase,and the atomic decay rate will also increase.

关 键 词：量子相变 光子 衰减率 

分 类 号：O469[理学—凝聚态物理]