摘要
利用数值计算的方法研究了运动的二能级原子在二项式光场作用下系统的保真度随时间的演化,并讨论了不同的初始态对保真度的影响。结果表明,原子的运动速度仅仅影响保真度的振荡周期,而原子的不同初态及光场的参数对保真度的影响较大,当原子处于叠加态以及光场初始平均光子数较大的情况下系统的保真度较高。
Abstract: By means of numerical methods, we studied the fidelity of the two-level atom and the binomial light field. The impact of different initial quantum states. The result showed that the velocity of atom effect the os different initial state of atom and the optical field parameters on the fideli the atom is in superposition state and the field has a bigger initial average the system has a higher value. system states is cillation ty have number which contained a moving discussed to the fidelity of period of the fidelity, and a bigger influence. When of photons the fidelity of the system has a higher value.
出处
《量子光学学报》
CSCD
北大核心
2011年第2期96-100,共5页
Journal of Quantum Optics
基金
国家自然科学基金(10574060)
山东省自然科学基金(ZR2010AQ027)
山东省高校科技计划(J09AL07
J10LA15)
关键词
二项式光场
量子信息
二能级原子
保真度
binomial light field
quantum information
two-level atom
fidelity