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Chinese Journal of Quantum Electronics

Proposal for realizing probabilistic teleportation of atomic state via cavity QED

Changchun Wang

Published Jan 1, 2004• 0 citations
OpenAlex

Abstract

We propose a teleportation scheme based on cavity QED. This scheme is applied to the case of an initial pure but not maximally entangled state for the EPR atomic pairs which are the basic resource. This is a quite restrictive approach to probabilistic teleportation, but the simplicity of the proposed scheme makes it realistic for experimental implementations.

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Revisiting Probabilistic Teleportation Scheme for Atomic State via Cavity QED

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理论物理通讯：英文版•Jan 1, 2006•0 citations
We propose a teleportation scheme based on cavity QED. This scheme is applied to the case of an initial pure but not maximally entangled state for the EPR atomic pairs which are the basic resource. This is a quite restrictive approach to probabilistic teleportation, but the simplicity of the proposed scheme makes it realistic for experimental implementations.
We propose a feasible scheme for implementing probabilistic teleportation of an unknown atomic state. In this scheme, atom 1 is initially in an arbitrary state, atoms 2 and 3 are prepared in a partially entangled pure state. After receiving the result of Bell-state measurement performed by Alice on atoms 1 ant 2, Bob lets atoms 2 and auxiliary atom A simultaneously interact with a single-mode vacuum cavity. Only controlling the interact time, we can reconstruct the initial state of atom 1 on the atom 3, i.e. double of square of mode of smaller coefficient of superposition state serving as quantum channel. Moreover, our scheme is insensitive to cavity decay, because atoms are interacting with a large detuning vacuum cavity field.
We present a scheme for realizing probabilistic teleportation of an unknown N -atom state via cavity QED. This scheme requires only a nonmaximally entangled pair to be used as a quantum channel, so the requirement of entanglement is reduced. In addition, our scheme does not involve the Bell-state measurement and is insensitive to the cavity decay, which is important from the experimental point of view. If the quantum channel is a two-atom maximally entangled state, teleportation of an unknown N -atom state can be realized by a simpler scheme via cavity QED.