CAJ | 학술논문

通过计算系统的共生纠缠度和平均纠缠度，研究了二项式态与初始时刻处于 GHZ 类态的3个两能级原子相互作用系统的量子纠缠特性，讨论了二项式光场的最大光子数和系数参量对系统纠缠特性的影响。结果表明：光场处于数态和相干态时，两原子间的共生纠缠度和平均纠缠度的峰值较小，光场的最大光子数 M 一定时，光场系数对两原子间的纠缠有一定的破坏作用；光场系数毲不变时，光场最大光子数 M 对系统中两原子间纠缠演化有显著的影响，随着光场最大光子数 M 的增大，共生纠缠度 C(t)达到稳定高频振荡的时间越来越长，平均纠缠度呈现单调递增的趋势，而在光场最大光子数 M>30时，呈现平缓增长的趋势。
통과계산계통적공생규전도화평균규전도，연구료이항식태여초시시각처우 GHZ 류태적3개량능급원자상호작용계통적양자규전특성，토론료이항식광장적최대광자수화계수삼량대계통규전특성적영향。결과표명：광장처우수태화상간태시，량원자간적공생규전도화평균규전도적봉치교소，광장적최대광자수 M 일정시，광장계수대량원자간적규전유일정적파배작용；광장계수탈불변시，광장최대광자수 M 대계통중량원자간규전연화유현저적영향，수착광장최대광자수 M 적증대，공생규전도 C(t)체도은정고빈진탕적시간월래월장，평균규전도정현단조체증적추세，이재광장최대광자수 M>30시，정현평완증장적추세。
The quantum entanglement properties of an interacting system of binomial light field and three two-level atoms initially in GHZ state were studied by means of concurrence and average concur-rence,The influence of the maximum photon number and the coefficients of the binomial field on the entanglement properties of the system are discussed.The results show that when the light field is in the coherent state and the number state,the value of concurrence of two atoms of the cavity is smaller.When value of the maximum photon number is constant,the coefficient of the binomial field on concurrence of between the two atoms has a certain influence,and when value of the coefficient of the binomial field is constant,maximum photon numbers of the binomial field have a bigger influence on time evolution of entanglement of the two atoms of the system.With the increase of the maximum photon number of the binomial field,the time of achieved the stable concurrence becomes longer,and the average concurrence is incremental,while the maximum photon number M > 30,growth of the average concurrence has became relatively slower.