Two schemes of teleportation one-particle state by a three-particle GHZ state

Hong‐Yi Dai, Ping‐Xing Chen, Cheng-Zu Li

Zha Xin-wei, Zhang Chun-Min, (1)西安交通大学理学院，西安 710049; (2)西安邮电学院应用数学与应用物理系, 西安 710061

Recently Yang Hon-qin et al proposed a scheme for teleporting a three-particle GHZ state from a sender to either of two receivers with two three-particle W state quantum channel. In this paper, the theoretical analysis is given and the new scheme for teleporting an N- particle GHZ state using only one three-particle W state quantum channel is proposed.

Xin-Wei Zha

Hai-Jing Cao, Huaisheng Wang, Pengfei Li +1 more

Lin Xiu, Hongcai Li

A scheme for teleporting an unknown three-particle GHZ state from a sender to either one of two receivers is proposed. In this scheme, the quantum channel is composed of two non-maximally three-particle entangled W states. An unknown three-particle GHZ state can be perfectly teleported probabilistically if the sender performs two generalized Bell-state measurements and the Hadamard operation while either one of two receivers introduces an ancillary particle which is one of the final three particle constituting the teleported state, then performs the controlled-not operation with the ancillary particle as the target bit and introduces an appropriate unitary transformation with the help of the other receiver's simple measurements. All kinds of unitary transformations are given in detail. The present scheme may be directly generalized to teleport an unknown multiparticle GHZ state via two three-particle entangled W states used as the quantum channel.

Pei-Ying, Xiong, Xutao +5 more