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Title: Bose-Einstein Condensation of Long-Lifetime Polaritons in Thermal Equilibrium

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1338654
Grant/Contract Number:
SC0001088
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 1; Related Information: CHORUS Timestamp: 2017-01-10 10:19:48; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Sun, Yongbao, Wen, Patrick, Yoon, Yoseob, Liu, Gangqiang, Steger, Mark, Pfeiffer, Loren N., West, Ken, Snoke, David W., and Nelson, Keith A. Bose-Einstein Condensation of Long-Lifetime Polaritons in Thermal Equilibrium. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.118.016602.
Sun, Yongbao, Wen, Patrick, Yoon, Yoseob, Liu, Gangqiang, Steger, Mark, Pfeiffer, Loren N., West, Ken, Snoke, David W., & Nelson, Keith A. Bose-Einstein Condensation of Long-Lifetime Polaritons in Thermal Equilibrium. United States. doi:10.1103/PhysRevLett.118.016602.
Sun, Yongbao, Wen, Patrick, Yoon, Yoseob, Liu, Gangqiang, Steger, Mark, Pfeiffer, Loren N., West, Ken, Snoke, David W., and Nelson, Keith A. Thu . "Bose-Einstein Condensation of Long-Lifetime Polaritons in Thermal Equilibrium". United States. doi:10.1103/PhysRevLett.118.016602.
@article{osti_1338654,
title = {Bose-Einstein Condensation of Long-Lifetime Polaritons in Thermal Equilibrium},
author = {Sun, Yongbao and Wen, Patrick and Yoon, Yoseob and Liu, Gangqiang and Steger, Mark and Pfeiffer, Loren N. and West, Ken and Snoke, David W. and Nelson, Keith A.},
abstractNote = {},
doi = {10.1103/PhysRevLett.118.016602},
journal = {Physical Review Letters},
number = 1,
volume = 118,
place = {United States},
year = {Thu Jan 05 00:00:00 EST 2017},
month = {Thu Jan 05 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.118.016602

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  • We adopt a kinetic theory of polariton nonequilibrium Bose-Einstein condensation to describe the formation of off-diagonal long-range order. The theory accounts properly for the dominant role of quantum fluctuations in the condensate. In realistic situations with optical excitation at high energy, it predicts a significant depletion of the condensate caused by long-wavelength fluctuations. As a consequence, the one-body density matrix in space displays a partially suppressed long-range order and a pronounced dependence on the finite size of the system.
  • It is shown theoretically that Bose condensation of spin-degenerated exciton polaritons results in spontaneous buildup of the linear polarization in emission spectra of semiconductor microcavities and therefore that linear polarization is a good order parameter for the polariton Bose condensation under unpolarized pumping. If spin degeneracy is lifted, an elliptically polarized light is emitted by the polariton condensate. The main axis of the ellipse rotates in time due to self-induced Larmor precession of the polariton condensate pseudospin. The polarization decay time is governed by the dephasing induced by the polariton-polariton interaction and is strongly dependent on the statistics of themore » condensed state. If the elliptical polarization preexists in the system as a result of pumping, the lifetime of the linear part of the polarization is also extremely sensitive to the degree of circular polarization induced in the system by pumping. This decay time can be used to measure the coherence degree of the condensate as a function of the polarization of the emitted light, as opposed to more conventional but harder particle counting experiments of the Hanbury Brown-Twiss type.« less
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