两量子位原子与二项式光场相互作用的几何量子失协  

Geometrical Quantum Discord of Two-qubit Atoms Interacting with the Binomial Optical Field

作　　者：陶宇 刘堂昆 单传家 TAO Yu;LIU Tang-kun;SHAN Chuan-jia(College of Physics and Electronic Science, Hubei Normal University, Huangshi 435002, Chin)

机构地区：[1]湖北师范大学物理与电子科学学院

出　　处：《量子光学学报》2018年第2期113-119,共7页Journal of Quantum Optics

基　　金：国家自然科学基金(11404108)

摘　　要：研究了任意两量子位原子与二项式光场相互作用系统中两原子间的量子关联，讨论了特定的三种原子初态下的不同参数的二项式光场对几何量子失协随时间演化的影响。结果表明：二项式光场的光子数M和概率σ对几何量子失协演化曲线有明显的影响。不同原子初态下，几何量子失协演化曲线的振幅、相位和周期性表现出不同的特点。The quantum correlation between two atoms is investigated in the system of arbitrary two-qubit atoms interacting with the binomial optical field. When the two atoms are initially in specific three states and the binomial optical field have the different probabilities of the Bernoulli trial or particle numbers, the temporal evolution of the geometrical quantum discord are discussed. The results indicate that the Photon number M and probability ~ of the binomial light field have an obvious influence on the geometrical quantum discord^s evolution curve. Amplitude, phase and periodicity of geometrical quantum discord＇s evolution curve showed different characteristics in different initial state of two atoms.

关 键 词：量子关联 两量子位原子 二项式光场 几何量子失协 

分 类 号：O413[理学—理论物理]