利用cluster态隐形传送任意三原子W态

提出一个隐形传送任意三原子纠缠W态的方案，在此方案中，选用由四个全同的二能级原子组成的cluster态作为量子信道.研究表明，接收者基于发送者的经典信息，借助于一个附加原子，实行联合幺正变换以及单原子幺正变换，可实现三原子W态的隐形传送.该方案不受外界热场和腔场耗散的影响，不需要贝尔态测量，成功实现传送的几率为1.

Teleportation of an arbitrary three-atom W state with cluster state

A scheme for teleportation of an unknown three-atom entangled W state is proposed,in which a cluster state of four identical two-level atoms is used as quantum channel.It is proved that,an arbitrary three-atom entangled W state can be teleported perfectly by introducing an additional atom and performing a collective unitary transformation as well as appropriate single-atom unitary transformations on the receivers side based on the classical information of the sender.In the scheme,the effects of the thermal field and the cavity decay are eliminated.Furthermore,the Bell measurements are not needed,and the successful probability of teleportation is 1.