A simple scheme for generating multi-atom GHZ state via cavity QED

doi:10.1088/1009-1963/16/8/009

中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2211-2214.doi: 10.1088/1009-1963/16/8/009

A simple scheme for generating multi-atom GHZ state via cavity QED

王俊, 余龙宝, 叶柳

School of Physics and Material Science, Anhui University, Hefei 230039, China

收稿日期:2006-11-11 修回日期:2006-11-27 出版日期:2007-08-20 发布日期:2007-08-20
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No 10574001) and the Program of the Education Department of Anhui Province (Grant No 2004kj029).

A simple scheme for generating multi-atom GHZ state via cavity QED

Wang Jun(王俊)^†, Yu Long-Bao(余龙宝), and Ye Liu(叶柳)

School of Physics and Material Science, Anhui University, Hefei 230039, China

Received:2006-11-11 Revised:2006-11-27 Online:2007-08-20 Published:2007-08-20
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No 10574001) and the Program of the Education Department of Anhui Province (Grant No 2004kj029).

摘要/Abstract

摘要： This paper proposes a simple scheme for generating a three-atom GHZ state via cavity quantum electrodynamics (QED). The task can be achieved through the interaction between two EPR states, which can be prepared easily with current technology. In this scheme, the cavity field is only virtually excited during the interaction process, and no quantum information transfer between the atoms and the cavity is required. Thus it greatly prolongs the efficient decoherent time. Moreover, this scheme is also applicable for generating an N-atom GHZ state.

关键词: multi-atom entanglement, GHZ state, cavity QED

Abstract: This paper proposes a simple scheme for generating a three-atom GHZ state via cavity quantum electrodynamics (QED). The task can be achieved through the interaction between two EPR states, which can be prepared easily with current technology. In this scheme, the cavity field is only virtually excited during the interaction process, and no quantum information transfer between the atoms and the cavity is required. Thus it greatly prolongs the efficient decoherent time. Moreover, this scheme is also applicable for generating an N-atom GHZ state.

Key words: multi-atom entanglement, GHZ state, cavity QED

中图分类号: (Cavity quantum electrodynamics; micromasers)

42.50.Pq

03.65.Ud (Entanglement and quantum nonlocality) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.50.Dv (Quantum state engineering and measurements)

王俊, 余龙宝, 叶柳. A simple scheme for generating multi-atom GHZ state via cavity QED[J]. 中国物理B, 2007, 16(8): 2211-2214.

Wang Jun(王俊), Yu Long-Bao(余龙宝), and Ye Liu(叶柳). A simple scheme for generating multi-atom GHZ state via cavity QED[J]. Chinese Physics, 2007, 16(8): 2211-2214.

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A simple scheme for generating multi-atom GHZ state via cavity QED

A simple scheme for generating multi-atom GHZ state via cavity QED

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