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Chinese Physics Letters

Scheme to Implement Scheme 1 → M Economical Phase-Covariant Telecloning via Cavity QED

Qi Liu, Wen‐Hai Zhang, Ye Liu

Published May 29, 2008• 6 citations
Publisher

Abstract

We propose an experimentally feasible scheme to implement the economical 1 → M(M = 2k +1) phase-covariant telecloning without ancilla based on cavity QED. The scheme requires cavity-assisted collision processes between atoms, which cross through the off-resonant cavity field in the vacuum states. During the telecloning process, the cavity is only virtually excited and it thus greatly prolongs the efficient decoherent time. Therefore, our scheme may be realized in experiment in future.

DOI
10.1088/0256-307x/25/6/007

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We propose an experimentally feasible scheme to implement the economical 1 → M(M = 2k +1) phase-covariant telecloning without ancilla based on cavity QED. The scheme requires cavity-assisted collision processes between atoms, which cross through the off-resonant cavity field in the vacuum states. During the telecloning process, the cavity is only virtually excited and it thus greatly prolongs the efficient decoherent time. Therefore, our scheme may be realized in experiment in future.
We propose an experimentally feasible scheme to implement the optimal asymmetric economical 1→3 phase-covariant telecloning protocol, which works without ancilla, based on cavity quantum electrodynamics (QED). The scheme is insensitive to the cavity field states and the cavity decay. In the telecloning process, the cavity is only virtually excited, it greatly prolongs the efficient decoherent time. Therefore, the scheme may be experimentally realized in the field of current cavity QED techniques.
A scheme for telecloning without the Bell-state measurement on cavity QED is proposed.The present protocol is based on the resonance of the atoms and the cavity mode.The advantages of the proposal are mainly as follows.One is that the required time for the whole procedure is short due to the resonance. The other one is that we need no any single-qubit rotating operation on the atoms,which makes the experimental setup simple.Furthermore,the present scheme is feasible based on currently available technologies.