期刊论文

中文

光学学报

0253-2239

2004

24

7

993-999

10.3321/j.issn:0253-2239.2004.07.030

国家自然科学基金 ( 10 2 0 4 0 0 9) 武汉市科技晨光计划资助课题

本校为其他机构

研究了Tavis-Cummings模型中光场存在相位损耗时,原子-光场系统线性熵、原子线性熵和光场线性熵的时间演化特性,讨论了光场的不同量子统计性质、不同的衰变常数和两原子的初始状态对各线性熵的影响.结果表明:光场的不同量子统计性质使得系统线性熵、原子线性熵和光场线性熵均发生明显改变.系统线性熵的演化与原子的初始状态无关,而原子线性熵的演化较强地依赖于原子的初始状态,但与腔场的相位损耗无关.

The time evolution of the linear entropies for the atom field coupling system, the atom and the field in Tavis Cummings model in the presence of phase damping of field is investigated. The effects of the initial field states, different value of decay constant and the initial atomic states on all the entropies are discussed.The results show that the different properties of the initial field prepared in the cavity can change the characters of all the linear entropies significatly.The evolution of the linear entropy of the system is independent of initial atomic preparation,but the linear entropy...