Probabilistic Controlled Teleportation of a Triplet W State  

作　　者：姜炜星 方建兴 朱士群 沙金巧 

机构地区：[1]Department of Physics, Suzhou University, Suzhou 215006

出　　处：《Chinese Physics Letters》2007年第5期1144-1146,共3页中国物理快报（英文版）

基　　金：Supported by the Special Research Foundation for the Doctoral Programme of Higher Education of China under Grant No 20050285002, and the Natural Science Foundation of Jiangsu Province under Grant No Q1108404.

摘　　要：A scheme for probabilistic controlled teleportation of a triplet W state from the sender Alice to the distant receiver Bob is proposed. In this scheme, an m-qubit GHZ state serves as the control parameter. The m control qubits are shared by m（s1, s2… sm） spatially-separated supervisors. With the aid of local operations and individual measurements, including Bell-state measurement, Von Neumann measurement, and mutual classical communication, etc., Bob can faithfully reconstruct the original state by performing relevant unitary transformations. However, even if one participant does not cooperate during the process, the receiver Bob cannot fully recover the original state. This protocol can be extended to probabilistic controlled teleportation of an arbitrary N-qubit state and some other N-qubit entangled states.A scheme for probabilistic controlled teleportation of a triplet W state from the sender Alice to the distant receiver Bob is proposed. In this scheme, an m-qubit GHZ state serves as the control parameter. The m control qubits are shared by m（s1, s2… sm） spatially-separated supervisors. With the aid of local operations and individual measurements, including Bell-state measurement, Von Neumann measurement, and mutual classical communication, etc., Bob can faithfully reconstruct the original state by performing relevant unitary transformations. However, even if one participant does not cooperate during the process, the receiver Bob cannot fully recover the original state. This protocol can be extended to probabilistic controlled teleportation of an arbitrary N-qubit state and some other N-qubit entangled states.

关 键 词：SECURE DIRECT COMMUNICATION QUBIT QUANTUM INFORMATION PODOLSKY-ROSENCHANNELS ENTANGLED STATE 2-PARTICLE STATE 

分 类 号：O4[理学—物理]