Laser Cooling, Friction and Diffusion in Three-Level Cascade System in Squeezed Vacuum(Atomic and molecular physics)

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概要

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• A theoretical study is carried out for the laser cooling of a moving three-level atom in a ladder configuration, driven by a bichromatic laser fields with a broad-band squeezed vacuum. The friction, diffusion coefficients and the equilibrium temperature are calculated numerically and shown graphically as a function of two-photon detunings for various cases of the squeezed vacuum. It is shown that the relative phases between the two coherent fields and the squeezed vacuum field play an important role in the cooling process. For a suitable choice of parameters, the atomic cooling temperature may be reduced to below that in the case of a vacuum, even down to two orders below the Doppler temperature limit. The efficiency of this cooling scheme is also analyzed.

• 社団法人日本物理学会の論文
• 2006-09-15

著者

• Li Ju-ping

  Institute Of Theoretical Physics Lanzhou University

• Zhang Jin-fang

  Institute Of Theoretical Physics Lanzhou University

• TAN Lei

  Institute of Theoretical Physics, Lanzhou University

• ZANG Xiao-Fei

  Institute of Theoretical Physics, Lanzhou University

• ZHANG Cui-Ling

  The School of Environmental and Municipal Engineering, Lanzhou Jiaotong University

• Zang Xiao-fei

  Institute Of Theoretical Physics Lanzhou University

• Tan Lei

  Institute Of Theoretical Physics Lanzhou University

• Zhang Cui-ling

  The School Of Environmental And Municipal Engineering Lanzhou Jiaotong University

関連論文

• Location of Spin-1 Condensate Magnetization in a Double-Well Potential under External Field(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Laser Cooling, Friction and Diffusion in Three-Level Cascade System in Squeezed Vacuum(Atomic and molecular physics)
• Enhanced Cooling of a $\Lambda$-Type Three-Level Atom in a High-Finesse Optical Cavity

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