Observation of nonequilibrium motion and equilibration in polariton rings

Mukherjee, S. and Myers, D. M. and Lena, R. G. and Ozden, B. and Beaumariage, J. and Sun, Z. and Steger, M. and Pfeiffer, L. N. and West, K. and Daley, A. J. and Snoke, D. W. (2019) Observation of nonequilibrium motion and equilibration in polariton rings. Physical Review B, 100 (24). 245304. ISSN 2469-9950 (https://doi.org/10.1103/PhysRevB.100.245304)

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Abstract

We present a study of the macroscopic dynamics of a polariton condensate formed by nonresonant optical excitation in a quasi-one-dimensional ring-shaped microcavity. The presence of a gradient in the cavity photon energy creates a macroscopic trap for the polaritons in which a coherent condensate is formed which evolves into a single-mode condensate at late times. With time- and energy-resolved imaging we show the role of interactions in the motion of the condensate as it undergoes equilibration in the ring. These experiments also give a direct measurement of the polariton-polariton interaction strength above the condensation threshold. Our observations are compared to the open-dissipative one-dimensional Gross-Pitaevskii equation which shows excellent qualitative agreement.

  • Item type:Article
    ID code:71776
    Dates:
    Date
    Event
    23 December 2019
    Published
    3 December 2019
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:16 Mar 2020 15:47
    Last modified:09 Apr 2024 01:23
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/71776
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