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Journal of Henan Normal University

Probability Teleportation of Weak Coherent State

Zhu Gang-yia

Published Jan 1, 2008• 0 citations
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Abstract

A scheme for teleportation of weak entangled coherent state is proposed by using the cavity quantum electrodynamics(QED).An cavity entangled with an atom is prepared as the quantum channel.This letter decoherent phenomena can be avoided in some degree.The study realizes the probability of successful teleportation via no-Bell Measurement detection.The non-orthogonal properties of the entangled coherent states is reflected.The success of teleportation affected by the mean photons is analyzed.

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A scheme for teleportation of weak entangled coherent state is proposed by using the cavity quantum electrodynamics(QED).An cavity entangled with an atom is prepared as the quantum channel.This letter decoherent phenomena can be avoided in some degree.The study realizes the probability of successful teleportation via no-Bell Measurement detection.The non-orthogonal properties of the entangled coherent states is reflected.The success of teleportation affected by the mean photons is analyzed.
A scheme for teleportation of weak entangled coherent state is proposed by using the cavity quantum electrodynamics(QED).We prepare an cavity entangled with an atom as the quantum channel.In this letter decoherent phenomena can be avoided in very degree,we also realize the probability of successful teleportation via no-Bell Measurement detection.It found that the non-orthogonal properties of the entangled coherent states is reflected,and analyzes the success of teleportation affected by the mean photons in this letter.
We propose a scheme for the teleportation of an unknown two-particle entangled EPR state without the Bell-state measurement.Alice needs to teleport an unknown two-particle EPR state to Bob.Her atoms and Bob's are prepared in the maximal entangled GHZ state,which forms the quantum channel.She sends two atoms through a single-mode cavity field,and drives them by a strong classical field at the same time.Throngh the interaction between the atoms and the cavity,the states of these atoms are evolved.After the interaction,Alice realizes the teleportation successfully.In the scheme,the effects of thermal field and cavity decay are all eliminated.The success probability is 1.0,and the fidelity is 1.0 too.
We propose a scheme for teleportation of an entangled coherent state through bipartite entangled quantum channels. We study the problem in both coherent state picture and orthogonal basis picture composed of coherent states, and find that in the coherent state picture teleportation can be implemented using only linear elements, but the probability of success is less than 1/2, while in the orthogonal basis picture the probability of successful teleportation reaches 1 as long as the four Bell states can be discriminated.