CONTROLED TELEPORTATION OF AN ARBITRARY UNKNOWN TWO-QUBIT ENTANGLED STATE

叶柳, 姚春梅, 郭光灿

Xiao‐Ming Xiu, Li Dong, Yajun Gao +1 more

Bo Wu, Da-Chuang Li, Hong Yi Dai

An experimentally feasible scheme for teleporting an arbitrary and unknown entangled state is proposed. In this paper, we use a cluster state as the quantum channel, and we do not need any joint Bell-state measurement (BSM). Our scheme is based on Josephson charge qubits, and the successful probability and fidelity of teleportation can both reach unity. Moreover, the current scheme can be realized within the current experimental technology.

Huang-rui Lei, Jiangang Tang, Peng Jia-yin

Xiaoqing Tan, Xu Zhou

In this paper, we present two different quantum teleportation schemes of an arbitrary single-particle, one is perfect teleportation and the other is probabilistic teleportation.In the first scheme, a four-particle maximally entangled state is used as the quantum channel.Besides, Bob needs to apply appropriate unitary transformations according to Alice's measurement results to recover the unknown state and the success probability is 1.In the latter scheme, the quantum channel is a four-particle non-maximally entangled state, which is a more general state.Furthermore, Bob needs to introduce an auxiliary qubit so that he can reconstruct the unknown state with the success probability of ( ).

Chuan-Jia Shan, Zhong‐Xiao Man, Yun‐Jie Xia +1 more

We propose a scheme for the teleportation of an arbitrary two-atom entangled state |ϕ〉12 = a|gg〉12 + b|ge〉12 + c|eg〉12 + d|ee〉12 in driven QED. Two pairs of maximally two-atom entangled state are required as the quantum channel. This scheme does not involve apparent (or direct) Bell-state measurement and is insensitive to the cavity decay and the thermal field. Meanwhile this approach can be used to teleport the unknown multipartite GHZ state. The probability of success in our scheme can reach 1.0.