中国物理B ›› 2007, Vol. 16 ›› Issue (6): 1559-1565.doi: 10.1088/1009-1963/16/6/011

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Creating unconventional geometric phase gate using squeeze-like operator assisted by strong driving field

朱爱东1, 张寿1, YeonKyu-Hwang2, YuSeong-Cho2, UmChung-In3   

  1. (1)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; (2)Department of Physics & BK21 Program for Device Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763, Republic of Korea; (3)Department of Physics, College of Science, Korea University, Seoul 136-701, Republic of Korea
  • 收稿日期:2006-08-24 修回日期:2007-01-04 出版日期:2007-06-20 发布日期:2007-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60667001).

Creating unconventional geometric phase gate using squeeze-like operator assisted by strong driving field

Zhu Ai-Dong(朱爱东)a)b)†, Zhang Shou(张寿)a)b)‡, Yeon Kyu-Hwangc), Yu Seong-Choc), and Um Chung-Ind)   

  1. a Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, Chinab Department of Physics, College of Science, Yanbian University, Yanji 133002, China; c Department of Physics & BK21 Program for Device Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763, Republic of Korea; d Department of Physics, College of Science, Korea University, Seoul 136-701, Republic of Korea
  • Received:2006-08-24 Revised:2007-01-04 Online:2007-06-20 Published:2007-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60667001).

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摘要： Based on the idea that a squeezing process can be thought of as a total cumulative effect of a large number of tiny squeezing processes, we define a squeeze-like operator with a time-dependent squeeze parameter. Applying this operator to and combining with a system which includes a two-photon interaction between two atoms and an initial vacuum cavity field, and resorting to a resonant strong driving classical field, we obtain an unconventional geometric phase gate with a shorter gating time.

关键词: squeeze-like operator, quantum phase gate, strong driving field

Abstract: Based on the idea that a squeezing process can be thought of as a total cumulative effect of a large number of tiny squeezing processes, we define a squeeze-like operator with a time-dependent squeeze parameter. Applying this operator to and combining with a system which includes a two-photon interaction between two atoms and an initial vacuum cavity field, and resorting to a resonant strong driving classical field, we obtain an unconventional geometric phase gate with a shorter gating time.

Key words: squeeze-like operator, quantum phase gate, strong driving field

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
32.80.-t (Photoionization and excitation) 42.50.Pq (Cavity quantum electrodynamics; micromasers)