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

doi:10.1088/1674-1056/21/4/044207

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.

Keywords: geometric phase rotating-wave approximation red-blue detuning asymmetry

Received: 10 September 2011
Revised: 10 October 2011
Accepted manuscript online:

PACS:	42.50.Ct	(Quantum description of interaction of light and matter; related experiments)
	03.65.Vf	(Phases: geometric; dynamic or topological)

Fund: 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).

Corresponding Authors: Wang Yue-Ming,wang_ym@sxu.edu.cn
E-mail: wang_ym@sxu.edu.cn

Cite this article:

Wang Yue-Ming(王月明), Du Guan(杜冠), and Liang Jiu-Qing(梁九卿) Geometric phases in qubit-oscillator system beyond conventional rotating-wave approximation 2012 Chin. Phys. B 21 044207

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