Mass-energy and anomalous friction in quantum optics

Sonnleitner, M. and Barnett, S. M. (2018) Mass-energy and anomalous friction in quantum optics. Physical Review A: Atomic, Molecular and Optical Physics, 98, 042106. (doi: 10.1103/PhysRevA.98.042106)

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The usual multipolar Hamiltonian for atom-light interaction features a nonrelativistic moving atom interacting with electromagnetic fields which inherently follow Lorentzian symmetry. This combination can lead to situations where atoms appear to experience a friction force, when in fact they only change their internal mass-energy due to the emission or absorption of a photon. Unfortunately, the simple Galilean description of the atom's motion is not sufficient to distinguish between a change in momentum due to acceleration and a change in momentum due to a change in internal mass-energy. In this work we show how a low-order relativistic correction can be included in the multipolar atom-light Hamiltonian. We also give examples how this affects the most basic mechanical interactions between atoms and photons.

Item Type:Articles
Additional Information:Also supported by the Austrian Science Fund FWF (Grant No. J 3703-N27).
Glasgow Author(s) Enlighten ID:Barnett, Professor Stephen and Sonnleitner, Dr Matthias
Authors: Sonnleitner, M., and Barnett, S. M.
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):2469-9934
Copyright Holders:Copyright © 2018 American Physical Society
First Published:First published in Physical Review A 98:042106
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
721291Astronomy and physics, theoretical physics and application physics / Quantum Theory. Royal Society Research Professorship.Stephen BarnettThe Royal Society (ROYSOC)RP150122S&E P&A - PHYSICS & ASTRONOMY