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Canadian Journal of Physics

Probabilistic remote preparation of a three-atom Greenberger–Horne–Zeilinger class state via cavity quantum electrodynamics

Xiao -B Xu, Jin Ming Liu

Published Dec 1, 2006• 9 citations
Publisher

Abstract

We present two schemes for remotely preparing a three-atom Greenberger–Horne–Zeilinger class state via entanglement swapping in cavity quantum electrodynamics. We show that each of our schemes can be achieved probabilistically by means of separate atomic measurements with the choice of an appropriate atom-cavity field interaction time.PACS Nos.: 03.67–a, 03.67.Lx, 42.50.Dv

DOI
10.1139/p07-007

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We present two schemes for remotely preparing a three-atom Greenberger–Horne–Zeilinger class state via entanglement swapping in cavity quantum electrodynamics. We show that each of our schemes can be achieved probabilistically by means of separate atomic measurements with the choice of an appropriate atom-cavity field interaction time.PACS Nos.: 03.67–a, 03.67.Lx, 42.50.Dv
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We propose two schemes to one-step generate the three-particle Greenberger–Horne–Zeilinger state based on the resonant atom–cavity fields interaction. The whole process may be realized experimentally providing that simple apparatus, initial conditions, and some manipulation in principle are achieved. Finally, in the current or the near future experiment parameter, we show that the proposed schemes can maintain the state with high fidelity under the condition of atomic spontaneous emission and decay of cavity fields.