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Coherent control of atom dipole squeezing and violation of Cauchy-Schwarz inequality

Zhao Jia-Qiang Lu Huai-Xin

Coherent control of atom dipole squeezing and violation of Cauchy-Schwarz inequality

Zhao Jia-Qiang, Lu Huai-Xin
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  • Received Date:  31 July 2009
  • Accepted Date:  05 February 2010
  • Published Online:  15 November 2010

Coherent control of atom dipole squeezing and violation of Cauchy-Schwarz inequality

  • 1. Shandong Provincial Key Laboratory of Multi-photon Entanglement and Manipulation, Department of Physics and Electronic Sciences, Weifang University, Weifang 261061, China

Abstract: By studying the interaction of isolated two-level atom with two-mode entangled coherent state optical field, the time evolution of dipole squeezing quantum effect in the system is investigated in detail. The results show that the properties of interaction coherent mode determine the degree of atom dipole squeezing. Parameter ΔV of violation of Cauchy-Schwarz inequality of the interaction system is defined. Time evolution of parameter ΔVis studied, and it can be seen evidently from the results that the degree of violation of Cauchy-Schwarz inequality accords with the nonclassical property of interaction system. Through tuning the parameter of the coherent field, we can easily perform the remote control of the noncommercial properties.

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