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Journal of Nanophotonics

Multiphoton interaction of a qutrit with single-mode quantized field in the ultrastrong and deep strong coupling regimes
Author(s): Hamlet K. Avetissian; Ara K. Avetissian; Garnik F. Mkrtchian; Oleg V. Kibis
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Paper Abstract

We consider the multiphoton dynamics of a quantum system composed of a three-state atom (a qutrit) and a single-mode photonic field in the ultrastrong and deep strong coupling regimes, when the coupling strength is comparable to or larger than the oscillator energy scale. We assume a qutrit to be in a L configuration, where an upper level is coupled to a twofold degenerate lower level. Direct multiphoton resonant transitions revealing generalized Rabi oscillations, collapse, and revivals in atomic excitation probabilities for the ultrastrong couplings are studied. In the deep strong coupling regime, particular emphasis is placed on the ground state of the considered system which strictly exhibits nonclassical properties.

Paper Details

Date Published: 23 July 2015
PDF: 14 pages
J. Nanophoton. 9(1) 093064 doi: 10.1117/1.JNP.9.093064
Published in: Journal of Nanophotonics Volume 9, Issue 1
Show Author Affiliations
Hamlet K. Avetissian, Yerevan State Univ. (Armenia)
Ara K. Avetissian, Yerevan State Univ. (Armenia)
Garnik F. Mkrtchian, Yerevan State Univ. (Armenia)
Oleg V. Kibis, Novosibirsk State Technical Univ. (Russia)

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