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Title: Phonon-mediated squeezing of the cavity field off-resonantly coupled with a coherently driven quantum dot

Abstract

We theoretically propose a scheme for the quadrature squeezing of the cavity field via dissipative processes. The effects of the electron-phonon interaction (EPI) on the squeezing are investigated, where the cavity is off-resonantly coupled with a coherently driven quantum dot (QD) which is allowed to interact with an acoustic-phonon reservoir. Under certain conditions, the participation of the phonon induced by both the EPI and the off-resonant coupling of the cavity with the QD enables some dissipative processes to occur resonantly in the dressed-state basis of the QD. The cavity-mode photons emitted or absorbed during the phonon-mediated dissipative processes are correlated, thus leading to the squeezing of the cavity field. A squeezed vacuum reservoir for the cavity field is built up due to the EPI plus the off-resonant coupling between the cavity and the QD. The numerical results obtained with an effective polaron master equation derived using second-order perturbation theory indicate that, in low temperature limit, the degree of squeezing is maximal but the increasing temperature of the phonon reservoir could hinder the squeezing and degrade the degree of the squeezing of the cavity field. In addition, the presence of the photonic crystal could enhance the quadrature squeezing of the cavitymore » field.« less

Authors:
 [1]; ;  [1]
  1. Department of Physics, Huazhong Normal University, Wuhan 430079 (China)
Publication Date:
OSTI Identifier:
22275772
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; CRYSTALS; ELECTRON-PHONON COUPLING; PERTURBATION THEORY; PHONONS; PHOTON EMISSION; PHOTONS; POLARONS; QUADRATURES; QUANTUM DOTS; TEMPERATURE DEPENDENCE

Citation Formats

Zhu, Jia-pei, College of Science, Honghe University, Mengzi 661100, Huang, Hui, and Li, Gao-xiang. Phonon-mediated squeezing of the cavity field off-resonantly coupled with a coherently driven quantum dot. United States: N. p., 2014. Web. doi:10.1063/1.4861739.
Zhu, Jia-pei, College of Science, Honghe University, Mengzi 661100, Huang, Hui, & Li, Gao-xiang. Phonon-mediated squeezing of the cavity field off-resonantly coupled with a coherently driven quantum dot. United States. doi:10.1063/1.4861739.
Zhu, Jia-pei, College of Science, Honghe University, Mengzi 661100, Huang, Hui, and Li, Gao-xiang. Tue . "Phonon-mediated squeezing of the cavity field off-resonantly coupled with a coherently driven quantum dot". United States. doi:10.1063/1.4861739.
@article{osti_22275772,
title = {Phonon-mediated squeezing of the cavity field off-resonantly coupled with a coherently driven quantum dot},
author = {Zhu, Jia-pei and College of Science, Honghe University, Mengzi 661100 and Huang, Hui and Li, Gao-xiang},
abstractNote = {We theoretically propose a scheme for the quadrature squeezing of the cavity field via dissipative processes. The effects of the electron-phonon interaction (EPI) on the squeezing are investigated, where the cavity is off-resonantly coupled with a coherently driven quantum dot (QD) which is allowed to interact with an acoustic-phonon reservoir. Under certain conditions, the participation of the phonon induced by both the EPI and the off-resonant coupling of the cavity with the QD enables some dissipative processes to occur resonantly in the dressed-state basis of the QD. The cavity-mode photons emitted or absorbed during the phonon-mediated dissipative processes are correlated, thus leading to the squeezing of the cavity field. A squeezed vacuum reservoir for the cavity field is built up due to the EPI plus the off-resonant coupling between the cavity and the QD. The numerical results obtained with an effective polaron master equation derived using second-order perturbation theory indicate that, in low temperature limit, the degree of squeezing is maximal but the increasing temperature of the phonon reservoir could hinder the squeezing and degrade the degree of the squeezing of the cavity field. In addition, the presence of the photonic crystal could enhance the quadrature squeezing of the cavity field.},
doi = {10.1063/1.4861739},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 3,
volume = 115,
place = {United States},
year = {2014},
month = {1}
}