量子电子学报
量子電子學報
양자전자학보
CHINESE JOURNAL OF QUANTUM ELECTRONICS
2009年
6期
681-688
,共8页
量子光学%x态%偶极相互作用%共生纠缠度%纠缠突然死亡%相互作用能
量子光學%x態%偶極相互作用%共生糾纏度%糾纏突然死亡%相互作用能
양자광학%x태%우겁상호작용%공생규전도%규전돌연사망%상호작용능
quantum optics%x state%dipole-dipole interaction%concurrence%entanglement sudden death%interaction energy
求出了初态为x态时Tavis-Cummings模型中两个有偶极相互作用原子的共生纠缠度,分析了偶极相互作用对纠缠的时间演化和纠缠突然死亡(ESD)的影响,以及共生纠缠度与原子间相互作用能的关系.结果表明,偶极相互作用对原子间的纠缠和ESD有显著的影响,会改变纠缠度的振荡周期和振幅,使出现ESD的时间间隔和次数减少.原子间的共生纠缠度与原子间相互作用能有着明显的对应关系,且与原子的初态有关.
求齣瞭初態為x態時Tavis-Cummings模型中兩箇有偶極相互作用原子的共生糾纏度,分析瞭偶極相互作用對糾纏的時間縯化和糾纏突然死亡(ESD)的影響,以及共生糾纏度與原子間相互作用能的關繫.結果錶明,偶極相互作用對原子間的糾纏和ESD有顯著的影響,會改變糾纏度的振盪週期和振幅,使齣現ESD的時間間隔和次數減少.原子間的共生糾纏度與原子間相互作用能有著明顯的對應關繫,且與原子的初態有關.
구출료초태위x태시Tavis-Cummings모형중량개유우겁상호작용원자적공생규전도,분석료우겁상호작용대규전적시간연화화규전돌연사망(ESD)적영향,이급공생규전도여원자간상호작용능적관계.결과표명,우겁상호작용대원자간적규전화ESD유현저적영향,회개변규전도적진탕주기화진폭,사출현ESD적시간간격화차수감소.원자간적공생규전도여원자간상호작용능유착명현적대응관계,차여원자적초태유관.
The concurrence of the two atoms with dipole-dipole interaction in the Tavis-Cummings model in an initial x state is derived. The influence of the dipole-dipole interaction on the entanglement time evolution and the entanglement sudden death (ESD) is analysed. The relation between the concurrence and the atomic interaction energy is investigated. The results show that the dipole-dipole interaction affects the concurrence and ESD remarkably, leads periods and amplitudes 6f the concurrence oscillation to change and time interval and number of the ESD to decrease. The relation between the concurrence and interaction energy relies on initial states of the atoms.
