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Title: Quantum optomechanics in the bistable regime

Abstract

We study the simplest optomechanical system with a focus on the bistable regime. The covariance matrix formalism allows us to study both cooling and entanglement in a unified framework. We identify two key factors governing entanglement; namely, the bistability parameter (i.e., the distance from the end of a stable branch in the bistable regime) and the effective detuning, and we describe the optimum regime where entanglement is greatest. We also show that, in general, entanglement is a nonmonotonic function of optomechanical coupling. This is especially important in understanding the optomechanical entanglement of the second stable branch.

Authors:
 [1];  [2];  [3];  [1]
  1. Institute for Quantum Information Science and Department of Physics and Astronomy, University of Calgary, Calgary T2N 1N4, Alberta (Canada)
  2. (Iran, Islamic Republic of)
  3. Department of Physics, Sharif University of Technology, Tehran (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22072210
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; FUNCTIONS; MATRICES; QUANTUM ENTANGLEMENT

Citation Formats

Ghobadi, R., Department of Physics, Sharif University of Technology, Tehran, Bahrampour, A. R., and Simon, C. Quantum optomechanics in the bistable regime. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.033846.
Ghobadi, R., Department of Physics, Sharif University of Technology, Tehran, Bahrampour, A. R., & Simon, C. Quantum optomechanics in the bistable regime. United States. doi:10.1103/PHYSREVA.84.033846.
Ghobadi, R., Department of Physics, Sharif University of Technology, Tehran, Bahrampour, A. R., and Simon, C. Thu . "Quantum optomechanics in the bistable regime". United States. doi:10.1103/PHYSREVA.84.033846.
@article{osti_22072210,
title = {Quantum optomechanics in the bistable regime},
author = {Ghobadi, R. and Department of Physics, Sharif University of Technology, Tehran and Bahrampour, A. R. and Simon, C.},
abstractNote = {We study the simplest optomechanical system with a focus on the bistable regime. The covariance matrix formalism allows us to study both cooling and entanglement in a unified framework. We identify two key factors governing entanglement; namely, the bistability parameter (i.e., the distance from the end of a stable branch in the bistable regime) and the effective detuning, and we describe the optimum regime where entanglement is greatest. We also show that, in general, entanglement is a nonmonotonic function of optomechanical coupling. This is especially important in understanding the optomechanical entanglement of the second stable branch.},
doi = {10.1103/PHYSREVA.84.033846},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}