基于法拉第旋转的GHZ态制备  

The preparation of GHZ state based on Faraday rotation

作　　者：冷春玲[1] 计新[1] 

机构地区：[1]延边大学理学院物理系,吉林延吉133002

出　　处：《延边大学学报（自然科学版）》2013年第2期112-115,共4页Journal of Yanbian University（Natural Science Edition）

摘　　要：利用光子在低品质腔的输入输出过程中产生的法拉第旋转制备原子的GHZ态.方案中的腔与原子之间是非强耦合,并且量子信息编码在原子低能级上,因此方案对腔衰减和原子自发辐射都不敏感.此外,方案不用对腔施加经典场,也不用选择相互作用时间,降低了实验上的难度.We propose a scheme to prepare the GHZ state of the atoms using the Faraday rotation produced by the input and output process of photons in the low quality cavity.The coupling between atom and cavity isn＇t strong in the scheme.Meanwhile,the quantum information is encoded in the low energy level of atoms.Therefore,our scheme is insensitive to both cavity decay and atomic spontaneous emission.In addition,we need not to impose the classical field or choose interaction time during the whole process,which reduces the difficulty of experiment.

关 键 词：法拉第旋转 低品质腔 GHZ态 

分 类 号：O431[机械工程—光学工程]