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Physica Scripta

Teleportation of an entangled atomic state using cavity-assisted collisions

Muhammad Irfan, Mudassar Aqueel Ahmad, Sajid Qamar, Shahid Qamar

Published Feb 3, 2012• 0 citations
Publisher

Abstract

We present a scheme for the teleportation of two-qubit entangled atomic states using the idea of a quantum controlled-NOT gate, based on cavity-assisted collisions proposed by Zheng and Guo (2000 Phys. Rev. Lett. 85 2392). In this scheme, there is only virtual exchange of photons; thus the quantum information is not transferred between the atoms and the cavity field and so the decoherence time of the cavity is greatly enhanced.

DOI
10.1088/0031-8949/85/03/035002

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We present a scheme for the teleportation of two-qubit entangled atomic states using the idea of a quantum controlled-NOT gate, based on cavity-assisted collisions proposed by Zheng and Guo (2000 Phys. Rev. Lett. 85 2392). In this scheme, there is only virtual exchange of photons; thus the quantum information is not transferred between the atoms and the cavity field and so the decoherence time of the cavity is greatly enhanced.
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.