利用三粒子部分纠缠GHZ态概率隐形传送三粒子GHZ态

提出利用一个三粒子部分纠缠GHZ态作为量子信道,实现三粒子GHZ态从发送者传送给两个接收者中任意一个的概率隐形传态方案.若发送者进行一次Bell测量和两次Hadamard门操作后,想得到所需传送的三粒子GHZ态的接收者端引进两个辅助粒子,进行两次控制-非操作,同时根据另一个接收者对手中粒子进行Hadamard门操作后的测量结果实施一个适当的幺正变换,可以一定的概率成功地隐形传送三粒子GHZ态.此方案可推广至隐形传送k粒子GHZ态,这时也只要用一个三粒子GHZ态作为量子信道,但想得到所需传送的k粒子GHZ态的接收者端需引进(k-1)个辅助粒子,进行(k-1)次控制-非操作.

Probabilistic Teleportation of a Three-particle GHZ State Via a Partial Three-particle GHZ State

A scheme for teleporting an unknown three-particle GHZ state from a sender to either one of two receivers through a non-maximally three-particle entangled GHZ state as quantum channel is proposed.An unknown three-particle entangled state can be perfectly teleported probabilistically if the sender performs a generalized Bell-state measurement and the Hadamard operations while either one of two receivers introduces two additional particles,performs the controlled-not(C-not) operations and introduces an appropriate unitary transformation with the help of the other receiver's the Hadamard operation and simple measurement.The present scheme may be directly generalized to teleport an unknown k-particle GHZ state from a sender to either one of two receivers by using a partial entangled three-particle GHZ state as the quantum channel,introducing(k-1) additional qubits and performing(k-1) C-not operations.