摘要
Recently Jiang et al.[Chin.Phys.Lett.24 (2007) 1144] gave a scheme for probabilistic controlled tele-portation of a triplet W state from the sender Alice to the distant receiver Bob.The m controlled qubits are sharedby m(s_1,s_2,...,s_m) spatially-separated supervisors.Based on transformation operator,we can extend to teleporting anarbitrary three-qubit state.The relation between the transformation operators and the Bob's unitary transformation isalso obtained.
Recently Jiang et al. [Chin. Phys. Lett. 24 （2007） 1144] gave a scheme for probabilistic controlled teleportation of a triplet W state from the sender Alice to the distant receiver Bob. The m controlled qubits are shared by m（s1, s2,..., sm） spatially-separated supervisors. Based on transformation operator, we can extend to teleporting an arbitrary three-qubit state. The relation between the transformation operators and the Bob＇s unitary transformation is also obtained.
基金
Natural Science Foundation of Shaanxi Province under Grant No.2004A15
the Science Plan Foundation of the Education Department of Shaanxi Province under Grant No.05JK288
关键词
算符
转换方式
概率论
远距传物
controlled teleportation, three-qubit state, transformation operator
