中国物理B ›› 2009, Vol. 18 ›› Issue (2): 440-445.doi: 10.1088/1674-1056/18/2/011

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Two simple schemes for implementing Toffoli gate via atom--cavity field interaction in cavity quantum electrodynamics

邵晓强1, 张寿2, 陈丽3   

  1. (1)Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; (2)Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China;Department of Physics, College of Science, Yanbian University, Yanji 133002, China; (3)Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • 收稿日期:2008-05-22 修回日期:2008-07-04 出版日期:2009-02-20 发布日期:2009-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60667001).

Two simple schemes for implementing Toffoli gate via atom--cavity field interaction in cavity quantum electrodynamics

Shao Xiao-Qiang(邵晓强)a), Chen Li(陈丽)b), and Zhang Shou(张寿)a)b)†   

  1. a Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; b Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • Received:2008-05-22 Revised:2008-07-04 Online:2009-02-20 Published:2009-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60667001).

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摘要： This paper proposes two schemes for implementing three-qubit Toffoli gate with an atom (as target qubit) sent through a two-mode cavity (as control qubits). The first scheme is based on the large-detuning atom--cavity field interaction and the second scheme is based on the resonant atom-field interaction. Both the situations with and without cavity decay and atomic spontaneous emission are considered. The advantages and the experimental feasibility of these two schemes are discussed.

关键词: Toffoli gate, cavity quantum electrodynamics

Abstract: This paper proposes two schemes for implementing three-qubit Toffoli gate with an atom (as target qubit) sent through a two-mode cavity (as control qubits). The first scheme is based on the large-detuning atom--cavity field interaction and the second scheme is based on the resonant atom-field interaction. Both the situations with and without cavity decay and atomic spontaneous emission are considered. The advantages and the experimental feasibility of these two schemes are discussed.

Key words: Toffoli gate, cavity quantum electrodynamics

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

  • 42.50.Pq
03.67.Lx (Quantum computation architectures and implementations)