Title
Stochastic precession of the polarization in a polariton laser Stochastic precession of the polarization in a polariton laser
Author
Publication type
article
Publication
Subject
Physics
Source (journal)
PHYSICAL REVIEW B
Volume/pages
93(2016) :11 , 8 p.
ISSN
2469-9950
Article Reference
115313
ISI
000372715500002
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Microcavity polaritons in the lasing regime undergo a spontaneous symmetry-breaking transition resulting in coherent emission with a well-defined polarization. The order parameter is thus a vector describing both the laser global phase and its polarization. Using an ultrafast single-shot detection technique, we show that polariton lasing in GaAs-based microcavities presents a high degree of second-order coherence [g((2))(tau = 0) approximate to 1] above threshold, and that the initial polarization is stochastic, taking any possible direction in the Poincare sphere (linear, elliptical, or circular). Once the polarization direction is established, subsequent oscillations of the emission probability witness the presence of an intrinsic polarization splitting. These results show the intricate polarization dynamics in the onset of polariton lasers.
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/e8755e/133193.pdf
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