Laser cooling with adiabatic passage for type-II transitions

doi:10.1007/s11467-020-1019-8

Front. Phys.

2021, Vol. 16

Issue (3) : 32501 https://doi.org/10.1007/s11467-020-1019-8

RESEARCH ARTICLE

Laser cooling with adiabatic passage for type-II transitions

Qian Liang¹, Tao Chen¹(

), Wen-Hao Bu¹, Yu-He Zhang¹, Bo Yan^1,^2,³(

)

¹. Interdisciplinary Center of Quantum Information, State Key Laboratory of Modern Optical Instrumentation, Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China
². Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing 210093, China
³. Key Laboratory of Quantum Optics, Chinese Academy of Sciences, Shanghai 200800, China

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Abstract

We extend the idea of laser cooling with adiabatic passage to multi-level type-II transitions. We find the cooling force can be significantly enhanced when a proper magnetic field is applied. That is because the magnetic field decomposes the multi-level system into several two-level sub-systems, hence the stimulated absorption and stimulated emission can occur in order, allowing for the multiple photon momentum transfer. We show that this scheme also works on the laser-coolable molecules with a better cooling effect compared to the conventional Doppler cooling. A reduced dependence on spontaneous emission based on our scheme is observed as well. Our results suggest this scheme is very feasible for laser cooling of polar molecules.

Keywords laser cooling of polar molecule adiabatic passage type-II transition cold molecule cold atom

Corresponding Author(s): Tao Chen,Bo Yan

Just Accepted Date: 20 October 2020 Issue Date: 14 December 2020

Cite this article:

Qian Liang,Tao Chen,Wen-Hao Bu, et al. Laser cooling with adiabatic passage for type-II transitions[J]. Front. Phys. , 2021, 16(3): 32501.

URL:

https://academic.hep.com.cn/fop/EN/10.1007/s11467-020-1019-8
https://academic.hep.com.cn/fop/EN/Y2021/V16/I3/32501

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