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Teleportation of a Three-Bit Unknown Atomic State through the Raman Interaction of V-Type Three-Level Atom with a Coherent State Cavity-Field

Lin Rui-e

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

Realizing the teleportation of quantum state,especially that of a multi-bit quantum state,is of great importance in quantum information field.A scheme for teleporting a three-bit unknown atomic state was proposed.In this scheme,an entangled state of three-level atom with a coherent state cavity-field is used as quantum channel to teleport a three-bit atomic state.

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TELEPORTATION OF AN UNKNOWN ATOMIC STATE THROUGHTHE RAMAN ATOM-CAVITY FIELD INTERACTION

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Acta Physica Sinica•Jan 1, 2001•1 citation
Realizing the teleportation of quantum state,especially that of a multi-bit quantum state,is of great importance in quantum information field.A scheme for teleporting a three-bit unknown atomic state was proposed.In this scheme,an entangled state of three-level atom with a coherent state cavity-field is used as quantum channel to teleport a three-bit atomic state.
A scheme is proposed to teleportation of an unknown multi-atom entangled state, considering the entangled states of two or more particles play an important role in both demonstrating quantum nonlocality and quantum information processing. The scheme is based on the degenerate Raman interaction of a Λ-type three-level atom with a single-mode field. First let n atoms cross a coherent cavity field in succession to prepare a quantum channel. Then the sender lets the other n atoms which carry the unknown state cross the cavity in succession and makes a joint measurement by detecting the cavity field and the atoms separately. When ｜α｜1, the cavity field can be detected with the measurement method of detecting orthogonal states. Finally the receiver reconstructs the initial state according to the outcome of the joint measurement transmitted through a classical channel. The advantage of the scheme is that it uses an entangled state of a coherent state with n atoms as a quantum channel, which makes the scheme simple and easy. The scheme is expected to be useful in demonstrating quantum nonlocality and information processing.