Theory of cavity-assisted microwave cooling of polar molecules

Author(s): M. Wallquist, P. Rabl, P. Zoller

Journal: New Journal of Physics

Volume: 10

Page(s): 063005

Year: 2008

DOI Number: 10.1088/1367-2630/10/6/063005

Link: Link to publication


We analyze cavity-assisted cooling schemes for polar molecules in the microwave domain, where molecules are excited on a rotational transition and energy is dissipated via strong interactions with a lossy stripline cavity, as recently proposed by André et al 2006 Nat. Phys. 2 636. We identify the dominant cooling and heating mechanisms in this setup and study cooling rates and final temperatures in various parameter regimes. In particular, we analyze the effects of a finite environment temperature on the cooling efficiency, and find minimal temperature and optimized cooling rate in the strong drive regime. Further, we discuss the trade-off between efficiency of cavity cooling and robustness with respect to ubiquitous imperfections in a realistic experimental setup, such as anharmonicity of the trapping potential.

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