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The radiation pressure and laser cooling of a V-type three level atom

Zhang Qin Tang Yuan-He Qu Guang-Hui Jin Kang

The radiation pressure and laser cooling of a V-type three level atom

Zhang Qin, Tang Yuan-He, Qu Guang-Hui, Jin Kang
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Publishing process
  • Received Date:  28 December 2009
  • Accepted Date:  16 August 2010
  • Published Online:  15 May 2011

The radiation pressure and laser cooling of a V-type three level atom

  • 1. (1)Department of Physics , Xi’an University of Technology , Xi’an 710054, China; (2)Department of Physics, Northwest University, Xi’an 710069, China

Abstract: The radiation pressure and laser cooling of a V-type three level atom in coherent fields in a squeezed vacuum are considered. From the Hamiltonian of the atomic system, making use of Born-Markoff approximation, the optical Bloch equations are derived. Using the adiabatic approximation, the expression of the mean dissipative force are acquired. The achievable equilibrium temperature is given by the quantum regression theorem and Einstein relation. The dependence of the spontaneous radiation pressure and ultimate temperature on quantum interference, average photon number and Rabi frequency are analyzed. The result shows that temperatures lower than the Doppler limit can be achieved.

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