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宁夏师范学院学报

Entanglement Teleportation Quantum States of GHZ Type

Guangshen Lv

Published Jan 1, 2011• 0 citations
OpenAlex

Abstract

By using a vacuum state interaction with atoms,combining cavity field cavity quantum electrodynamics technology,and controlling the flying speed of atoms in cavity to adjust the effect time of atoms and cavity field,considered the volution situation bewtween quantum states and role of the evolution of cavity field in the case of non-vacuum state cavity quantum states,the method of entanglement and teleportation quantum states of multi-particle and multi-photon cavity field in the atomic state of the GHZ type is studied.

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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.
A scheme for an arbitrary three-particle non-maximally entanglement W state as quantum channel is to achieve the controlled teleporting of two-particle,teleporting unknown quantum state form a sender to either of the two receivers.By the technology of cavity quantum electrodynamics,purifying the non-maximally entanglement state on cavity quantum electrodynamics is purified,the teleportation probability is realized.Transfer with the atoms through the catity resonance interaction to achieve the probability of an unknown quantum state transfer,machinery rather than the conduct of unitary transformation,has greater the feasibility.