腔QED中三粒子W态的隐形传递(英文)  

Teleportation of a three-atom entangled W state in cavity QED

作　　者：邹蕊[1] 方建兴[1] 

机构地区：[1]苏州大学物理科学与技术学院,江苏苏州215006

出　　处：《苏州大学学报（自然科学版）》2009年第2期52-57,共6页Journal of Soochow University(Natural Science Edition)

基　　金：Supported by the National Natural Science Foundation of China(100774108);the Special Research Founda-tion for the Doctoral Program of Higher Education(20050285002)

摘　　要：首先,针对传递三粒子W态的困难,提出了腔QED中的两种方案来完成W态的隐形传态.在一种方案中,我们利用一个EPR对和GHZ态来作为量子通道,在真空腔中实现了对W态的传送.而第二种方案与第一种不同之处是,我们使用了两个EPR对来作为量子通道,并且引入了一个附加粒子来完成传态的.此外,这些方案的显著优点是不用Bell基测量,而且可忽略腔场热作用和腔延迟作用的影响.We have investigated the problem of teleporting a three-atom entangled W state and propose two schemes based on entanglement swapping to complete the teleportation. We put forward the first scheme for the teleportation of W state by using an EPR pair and a GHZ state via vacuum cavities, the second scheme for teleporting W state by using two EPR pairs as quantum channels and in- troducing an addition atom via thermal cavities. Further more, the distinct advantage of the present schemes are that the Bell-state measurement is not required. The effects of cavity decay and thermal field are all eliminated.

关 键 词：隐形传送 纠缠态 腔QED 

分 类 号：O431[机械工程—光学工程]