中国物理B ›› 2012, Vol. 21 ›› Issue (4): 44207-044207.doi: 10.1088/1674-1056/21/4/044207

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王月明1 2,杜冠1,梁九卿1   

  • 收稿日期:2011-09-10 修回日期:2011-10-10 出版日期:2012-02-29 发布日期:2012-02-29
  • 通讯作者: 王月明,wang_ym@sxu.edu.cn E-mail:wang_ym@sxu.edu.cn

Geometric phases in qubit-oscillator system beyond conventional rotating-wave approximation

Wang Yue-Ming(王月明)a)b), Du Guan(杜冠)a), and Liang Jiu-Qing(梁九卿)a)   

  1. a. Department of Physics, Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China;
    b. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China
  • Received:2011-09-10 Revised:2011-10-10 Online:2012-02-29 Published:2012-02-29
  • Contact: Wang Yue-Ming,wang_ym@sxu.edu.cn E-mail:wang_ym@sxu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11075099, 11047167, and 11105087), the Programme of State Key Laboratory of Quantum Optics and Quantum Optics Devices (Grant No. KF201002), the National Fundamental Fund of Personnel Training (Grant No. J1103210), and the Youth Science Foundation of Shanxi Province of China (Grant No. 2010021003-2).

Abstract: In this work we investigated the geometric phases of a qubit-oscillator system beyond the conventional rotating-wave approximation. We find that in the limiting of weak coupling the results coincide with that obtained under rotating-wave approximation while there exists an increasing difference with the increase of coupling constant. It was shown that the geometric phase is symmetric with respect to the sign of the detuning of the quantized field from the one-photon resonance under the conventional rotating-wave approximation while a red-blue detuning asymmetry occurs beyond the conventional rotating-wave approximation.

Key words: geometric phase, rotating-wave approximation, red-blue detuning asymmetry

中图分类号:  (Quantum description of interaction of light and matter; related experiments)

  • 42.50.Ct
03.65.Vf (Phases: geometric; dynamic or topological)