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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Theory of cavity-assisted microwave cooling of polar molecules

Margareta Wallquist1,2,5, Peter Rabl3,4, Mikhail D Lukin3,4 and Peter Zoller1,2

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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.


PACS

37.10.Mn Slowing and cooling of molecules

31.30.J- Relativistic and quantum electrodynamic (QED) effects in atoms, molecules, and ions

Subjects

Atomic and molecular physics

Dates

Issue 6 (June 2008)

Received 18 March 2008

Published 4 June 2008



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