Spectroscopic signatures of quantum friction

Klatt, J., Bennett, R. and Buhmann, S. Y. (2016) Spectroscopic signatures of quantum friction. Physical Review A: Atomic, Molecular and Optical Physics, 94(6), 063803. (doi: 10.1103/PhysRevA.94.063803)

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We present a formula for the spectroscopically accessible level shifts and decay rates of an atom moving at an arbitrary angle relative to a surface. Our Markov formulation leads to an intuitive analytic description whereby the shifts and rates are obtained from the coefficients of the Heisenberg equation of motion for the atomic flip operators but with complex Doppler-shifted (velocity-dependent) transition frequencies. Our results conclusively demonstrate that for the limiting case of parallel motion the shifts and rates are quadratic or higher in the atomic velocity. We show that a stronger, linear velocity dependence is exhibited by the rates and shifts for perpendicular motion, thus opening the prospect of experimentally probing the Markovian approach to the phenomenon of quantum friction.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Bennett, Dr Robert
Authors: Klatt, J., Bennett, R., and Buhmann, S. Y.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review A: Atomic, Molecular and Optical Physics
Publisher:American Physical Society
ISSN (Online):1094-1622
Published Online:01 December 2016

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