摘要
研究两个JC原子的初态为量子纠缠态,而两个腔场处在相同的Fock态的状态下两个原子的纠缠动力学.基于几何量子失协,发现两个JC原子间、原子和腔场间的关联动力学存在猝死现象,且猝死出现的时间随光子数的增加而不断提前.此外,相比于原子和腔的关联动力学,发现原子间的关联猝死比原子和腔场间的关联猝死更加明显.
Atom-atom and atom-cavity quantum correlation dynamics is studied for two entan-gled Jaynes-Cummings atoms in two separate optical cavities initially in Fock states. Using geometric quantum discord, we find out that correlation sudden death exists in atom-atom and atom-cavity dy-namics. The more photons in cavities, the earlier this phenomenon appears. In addition, we also find that atom-atom correlation sudden death is more obvious than that for atom-cavity subsystems.
作者
翁小媛
杨榕灿
WENG Xiao-yuan YANG Rong-can(College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China)
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第6期40-45,共6页
Journal of Fujian Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(61308012
61275215)
关键词
量子关联
几何量子失协
JC原子
光学微腔
quantum correlation
geometric quantum discord
JC atoms
optical cavity
