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Title: Dual squeezed states in an atom-photon cluster and their manifestations

Abstract

The general kinetic equation for an isolated two-level atom and a high-Q cavity mode in a heat bath exhibiting quantum correlations (entangled bath) is applied to the analysis of the squeezed states of the collective system. Two types of collective operators are introduced for the analysis: one is based on bosonic commutation relations, and the other, on the commutation relations of the algebra obtained by a polynomial deformation of the angular momentum algebra. On the basis of these relations, formulas for observables are constructed that identify squeezed states in the system. It is shown that, under certain conditions, the collective system exhibits dual squeezing within the relations for boson operators, as well as for the operators constructed from the angular momentum algebra. Such squeezing is demonstrated under a projective measurement of an atom and for an entanglement swapping protocol. In the latter case, when measuring two initially independent atomic systems, depending on the type of measurement, two cavity modes collapse into a nonseparable state, which is described either by a nonseparability relation based on boson operators or by a relation based on the operators of the algebra of the quasimomentum of the collective system consisting of these two modes.

Authors:
 [1]
  1. St. Petersburg State University of Aerospace Instrumentation (Russian Federation)
Publication Date:
OSTI Identifier:
22027890
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 114; Journal Issue: 4; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; ALGEBRA; ANGULAR MOMENTUM; ATOMIC CLUSTERS; ATOMS; COMMUTATION RELATIONS; CORRELATIONS; DEFORMATION; EXCITED STATES; KINETIC EQUATIONS; PHOTONS; POLYNOMIALS; QUANTUM ENTANGLEMENT; QUANTUM OPERATORS

Citation Formats

Trubilko, A. I., E-mail: trubilko.andrey@gmail.com. Dual squeezed states in an atom-photon cluster and their manifestations. United States: N. p., 2012. Web. doi:10.1134/S1063776112020331.
Trubilko, A. I., E-mail: trubilko.andrey@gmail.com. Dual squeezed states in an atom-photon cluster and their manifestations. United States. https://doi.org/10.1134/S1063776112020331
Trubilko, A. I., E-mail: trubilko.andrey@gmail.com. 2012. "Dual squeezed states in an atom-photon cluster and their manifestations". United States. https://doi.org/10.1134/S1063776112020331.
@article{osti_22027890,
title = {Dual squeezed states in an atom-photon cluster and their manifestations},
author = {Trubilko, A. I., E-mail: trubilko.andrey@gmail.com},
abstractNote = {The general kinetic equation for an isolated two-level atom and a high-Q cavity mode in a heat bath exhibiting quantum correlations (entangled bath) is applied to the analysis of the squeezed states of the collective system. Two types of collective operators are introduced for the analysis: one is based on bosonic commutation relations, and the other, on the commutation relations of the algebra obtained by a polynomial deformation of the angular momentum algebra. On the basis of these relations, formulas for observables are constructed that identify squeezed states in the system. It is shown that, under certain conditions, the collective system exhibits dual squeezing within the relations for boson operators, as well as for the operators constructed from the angular momentum algebra. Such squeezing is demonstrated under a projective measurement of an atom and for an entanglement swapping protocol. In the latter case, when measuring two initially independent atomic systems, depending on the type of measurement, two cavity modes collapse into a nonseparable state, which is described either by a nonseparability relation based on boson operators or by a relation based on the operators of the algebra of the quasimomentum of the collective system consisting of these two modes.},
doi = {10.1134/S1063776112020331},
url = {https://www.osti.gov/biblio/22027890}, journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 4,
volume = 114,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2012},
month = {Sun Apr 15 00:00:00 EDT 2012}
}