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Dynamical Critical Exponents in Driven-Dissipative Quantum Systems

P. Comaron, G. Dagvadorj, A. Zamora, I. Carusotto, N. P. Proukakis, and M. H. Szymańska
Phys. Rev. Lett. 121, 095302 – Published 28 August 2018
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Abstract

We study the phase ordering of parametrically and incoherently driven microcavity polaritons after an infinitely rapid quench across the critical region. We confirm that the system, despite its driven-dissipative nature, satisfies the dynamical scaling hypothesis for both driving schemes by exhibiting self-similar patterns for the two-point correlator at late times of the phase ordering. We show that polaritons are characterized by the dynamical critical exponent z2 with topological defects playing a fundamental role in the dynamics, giving logarithmic corrections both to the power-law decay of the number of vortices and to the associated growth of the characteristic length scale.

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  • Received 22 August 2017

DOI:https://doi.org/10.1103/PhysRevLett.121.095302

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

P. Comaron1, G. Dagvadorj2,3, A. Zamora2, I. Carusotto4, N. P. Proukakis1, and M. H. Szymańska2,*

  • 1Joint Quantum Centre (JQC) Durham-Newcastle, School of Mathematics, Statistics and Physics, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
  • 2Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, United Kingdom
  • 3Department of Physics, University of Warwick, Coventry, CV4 7AL, United Kingdom
  • 4INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, 38123 Povo, Italy

  • *m.szymanska@ucl.ac.uk

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Issue

Vol. 121, Iss. 9 — 31 August 2018

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