摘要
提出一个任意三粒子W态从发送者传送给两个接收者任意一个的量子隐形传送方案。该方案用三个三粒子W态作为量子信道,且有两种方法实现传送目的。若发送者进行三次Bell态测量,想得到所需传送三粒子W态的接收者根据发送者的Bell态测量结果和另一个接收者在计算基{|0>,|1>}下的测量结果实施适当的幺正变换操作,就可以一定概率成功地隐形传送三粒子W态;分析表明如果改变操作秩序,成功实现量子隐形传态的概率不会受到影响。同时,该方案可推广至隐形传送N(N≥4)粒子W态,这时需要用N个三粒子W态作为量子信道。发送者做N次Bell态测量,接收者根据如前所述的所有测量结果实施相应的幺正变换,即可完成对N粒子W态的隐形传送。
A scheme for teleporting an arbitrary three-particle W state from a sender to either of the two receivers is proposed, where the three three-particle W states quantum channel are taken as quantum channels. There are two ways to realize the intention of teleportation. It is proved that, for such maximally entangled quantum channels, there is still a certain probability of successful teleportation if the sender performs three generalized Bell-state measurements while either of the two receivers performs an appropriate unitary transformation with the help of the other suitable measurements in the basis of { ｜ 0 〉 , ｜ 1 〉 } and classical information; on the other hand, the probability of successful teleportation is not affected by the order of operations. The present scheme may be directly generalized to teleport an unknown N- particle W state from a sender to either of the two receivers by using N W states as quantum channels, as well as performing N Bell measurements.
出处
《量子光学学报》
CSCD
北大核心
2008年第4期407-412,共6页
Journal of Quantum Optics
基金
山东省自然科学基金(批准号:Y2004A09)
关键词
量子光学
隐形传态
三粒子W态
量子信道
quantum optics
teleportation
three-particle W state
quantum channel
