Observation of nonequilibrium motion and equilibration in polariton rings

S. Mukherjee; D. M. Myers; R. G. Lena; B. Ozden; J. Beaumariage; Z. Sun; M. Steger; L. N. Pfeiffer; K. West; A. J. Daley; D. W. Snoke

doi:10.1103/PhysRevB.100.245304

Observation of nonequilibrium motion and equilibration in polariton rings

S. Mukherjee, D. M. Myers, R. G. Lena, B. Ozden, J. Beaumariage, Z. Sun, M. Steger, L. N. Pfeiffer, K. West, A. J. Daley, D. W. Snoke

Division of Engineering and Science (Abington)

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

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.

Original language	English (US)
Article number	245304
Journal	Physical Review B
Volume	10
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.100.245304
State	Published - Dec 23 2019

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.100.245304

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title = "Observation of nonequilibrium motion and equilibration in polariton rings",

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.",

author = "S. Mukherjee and Myers, {D. M.} and Lena, {R. G.} and B. Ozden and J. Beaumariage and Z. Sun and M. Steger and Pfeiffer, {L. N.} and K. West and Daley, {A. J.} and Snoke, {D. W.}",

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doi = "10.1103/PhysRevB.100.245304",

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T1 - Observation of nonequilibrium motion and equilibration in polariton rings

AU - Mukherjee, S.

AU - Myers, D. M.

AU - Lena, R. G.

AU - Ozden, B.

AU - Beaumariage, J.

AU - Sun, Z.

AU - Steger, M.

AU - Pfeiffer, L. N.

AU - West, K.

AU - Daley, A. J.

AU - Snoke, D. W.

PY - 2019/12/23

Y1 - 2019/12/23

N2 - 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.

AB - 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.

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Observation of nonequilibrium motion and equilibration in polariton rings

Abstract

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