期刊论文

中文

量子光学学报

1007-6654

2009

15

3

244-247

10.3969/j.issn.1007-6654.2009.03.010

Natural Science Foundation of Hunan Province（06JJ50118）~~；

本校为第一机构

两个偶极耦合的二能级原子置于热辐射场中,原子用泡利算符描述,环境用无穷的谐振子热库描述,运用密度矩阵方法,得到两能级原子密度矩阵元演化规律。针对三种不同的初始状态,利用共生纠缠度分析置于热辐射场中原子量子态的纠缠。结果表明:当两个原子初始处于不同量子叠加态时,原子的纠缠呈现出明显的差异。

The two-level atom is described by Pauli sign and environment is described by infinite harmonic particle thermal reservoir.We have studied the entanglement of the coupling two-level atoms which are put in the thermal radiation field.The two-level atoms′ reducible density rectangular array is obtained.We discuss the properties of entanglement by virtue of concurrence.It is shown that as the two two-level atoms are initially situated in different coherent superpositi...