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Chinese Journal of Quantum Electronics

A better scheme of probabilistic teleportation of a triplet W state

Ning Li

Published Jan 1, 2012• 1 citation
OpenAlex

Abstract

A better scheme of probabilistic teleportation of a triplet W state is proposed,where the three three-qubit W states are taken as quantum channels.Compared with Yan's scheme,instead of using Bellstate measurement,a new orthogonal basis measurement is proposed in the scheme.The receiver performs appropriate unitary transformation according to the sender's measurements,the success of probabilistic teleportation can be improved to 20/27.

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Chinese Journal of Quantum Electronics•Jan 1, 2006•0 citations
A better scheme of probabilistic teleportation of a triplet W state is proposed,where the three three-qubit W states are taken as quantum channels.Compared with Yan's scheme,instead of using Bellstate measurement,a new orthogonal basis measurement is proposed in the scheme.The receiver performs appropriate unitary transformation according to the sender's measurements,the success of probabilistic teleportation can be improved to 20/27.
A scheme is presented to probabilistically controlled teleport an arbitrary triplet W state using three pair maximally entangled triplet W state as the quantum channel. During the teleportation procedure, the controller performs Von Neumann measurements on his particles, the sender makes orthogonal basis measurements, instead of using Bell-state measurements, and the receiver can faithfully reconstruct the original state by performing relevant unitary transformations. The total probability of successful teleportation can be improved to 20/27. unitary transformation
A scheme for teleporting an arbitrary three-particle W state from a sender to either of the two receivers is proposed,where the three three-particle W states quantum channel are taken as quantum channels.There are two ways to realize the intention of teleportation.It is proved that,for such maximally entangled quantum channels,there is still a certain probability of successful teleportation if the sender performs three generalized Bell-state measurements while either of the two receivers performs an appropriate unitary transformation with the help of the other suitable measurements in the basis of {|0,|1} and classical information;on the other hand,the probability of successful teleportation is not affected by the order of operations.The present scheme may be directly generalized to teleport an unknown N-particle W state from a sender to either of the two receivers by using N W states as quantum channels,as well as performing N Bell measurements.
A scheme for teleporting an arbitrary and unknown three-particle state from a sender to either one of two receivers is proposed. The quantum channel is composed of a two-particle non-maximally entangled state and two three-particle non-maximally entangled W states. An arbitrary three-particle state can be perfectly teleported probabilistically if the sender performs three generalized Bell-state measurements and sends to the two receivers the classical result of these measurements and either one of the two receivers adopts an appropriate unitary transformation conditioned on the suitable measurement outcomes of the other receiver. All kinds of unitary transformations are given in detail.