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Journal of Fujian Normal University

Teleportation of Controlled-not Gate Via Cavity QED

Xinghua Li

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

A scheme is proposed for teleporting a controlled-not gate via cavity QED.In the scheme,since the frequency of the atomic transition is large detune to the cavity,the cavity is only virtually excited,so that there is no energy exchange between the cavity and the atomic system.Thus the requirement on the quality of the cavity is greatly loosened.

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Chinese Journal of Quantum Electronics•Jan 1, 2009•0 citations
A scheme is proposed for teleporting a controlled-not gate via cavity QED.In the scheme,since the frequency of the atomic transition is large detune to the cavity,the cavity is only virtually excited,so that there is no energy exchange between the cavity and the atomic system.Thus the requirement on the quality of the cavity is greatly loosened.
A controlled teleportation scheme for single atomic quantum state is proposed in cavity QED.The scheme is based on the large detuning interaction of the atom-cavity system,therefore,it is not insensitive to the decoherence induced by cavity decay.The scheme also incorporates a third party to control the process,and only with the cooperation of the third party,the receiver can successfully reconstruct the original atom state.Finally,the feasibility of the experimentally realization of the scheme is also discussed.
A scheme is proposed to implement quantum controlled-not(CNOT) gates with a resonant cavity and this quantum gate is used to carry out teleportation of an arbitrary single-atom superposition state.By using three level atoms,it can be realized through single-qubit operation and resonant interaction between two atoms and a resonant cavity.The interaction time between two atoms and the single-mode cavity is very short,which is important in view of decoherence.This character is one of the advantages of this scheme comparing to the scheme based on detuned cavity.