Comment on 'Coupled dynamics of atoms and radiation-pressure-driven interferometers' and 'Superstrong coupling regime of cavity quantum electrodynamics'

Journal Article · Thu Nov 15 04:00:00 EST 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.057801· OSTI ID:21028123

Asboth, J K ^[1]; Domokos, P ^[2]

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1. Research Institute of Solid State Physics and Optics, Hungarian Academy of Sciences, P.O. Box 49, H-1525 Budapest (Hungary)
2. Institut fuer Theoretische Physik, Universitaet Innsbruck, Technikerstr. 25, A-6020 Innsbruck (Austria)

In two recent articles [D. Meiser and P. Meystre, Phys. Rev. A 73, 033417 (2006); 74, 065801 (2006)], Meiser and Meystre describe the coupled dynamics of a dense gas of atoms and an optical cavity pumped by a laser field. They make two important simplifying assumptions: (i) The gas of atoms forms a regular lattice and can be replaced by a fictitious mirror and (ii) the atoms strive to minimize the dipole potential. We show that the two assumptions are inconsistent: The configuration of atoms minimizing the dipole potential is not a perfect lattice. Assumption (ii) is erroneous, as in the strong coupling regime the dipole force does not arise from the dipole potential. The real steady state, where the dipole forces vanish, is indeed a regular lattice. Furthermore, the bistability predicted by Meiser and Meystre does not occur in this system.

• OSTI ID: 21028123
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DIPOLES
INTERFEROMETERS
LASER RADIATION
OPTICAL PUMPING
PHOTON-ATOM COLLISIONS
RADIATION PRESSURE
STEADY-STATE CONDITIONS