Perspectives in superfluidity in resonantly driven polariton fluids

Amelio, Ivan; Carusotto, Iacopo

doi:10.1103/physrevb.101.064505

Cited by 20 publications

(33 citation statements)

References 22 publications

(42 reference statements)

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“…These effects result in the change of the flow characteristics from superfluid/subsonic to supersonic, thus creating a horizon. As shown in [38,39], the sharpness of this transition depends significantly on the shape of the pump spot and on the presence of an obstacle.…”

Section: Analogue Gravity With Polaritonsmentioning

confidence: 92%

“…This induces a reduction in the speed of sound (cs∝ℏgρ0). Moreover, because of the conservation of the polariton energy in the cavity, the sum of the kinetic energy and of the interaction energy is constant [38] mv022+ℏgρ0=normalΔ, where v 0 is the polariton flow velocity and Δ is the energy detuning at low power between the pump laser and the polariton branch at zero velocity. This induces an increase in the kinetic energy and then in the flow velocity.…”

Section: Analogue Gravity With Polaritonsmentioning

confidence: 99%

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Polariton fluids for analogue gravity physics

Jacquet

Boulier

Claude

et al. 2020

Phil. Trans. R. Soc. A.

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Analogue gravity enables the study of fields on curved space–times in the laboratory. There are numerous experimental platforms in which amplification at the event horizon or the ergoregion has been observed. Here, we demonstrate how optically generating a defect in a polariton microcavity enables the creation of one- and two-dimensional, transsonic fluid flows. We show that this highly tuneable method permits the creation of horizons. Furthermore, we present a rotating geometry akin to the water-wave bathtub vortex. These experiments usher in the possibility of observing stimulated as well as spontaneous amplification by the Hawking, Penrose and Zeld’ovich effects in fluids of light. This article is part of a discussion meeting issue ‘The next generation of analogue gravity experiments’.

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Section: Analogue Gravity With Polaritonsmentioning

confidence: 92%

Section: Analogue Gravity With Polaritonsmentioning

confidence: 99%

Polariton fluids for analogue gravity physics

Jacquet

Boulier

Claude

et al. 2020

Phil. Trans. R. Soc. A.

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“…In particular, the experimental study of a polariton field flowing past an obstacle, and the observation of quantized vortices in the wake of the obstacle has been the subject of many papers [23,24,25]. This superfluid and turbulent behaviours have been the topic of quite a few theoretical papers [26,27,28,29] and this is at the core of our study. Mixing advantageously the low effective mass of cavity light with the strong inter-particle interaction between matter excitation such as semiconductor excitons, these systems have shown recently superfluid behavior even until room temperature [30].…”

Section: Introductionmentioning

confidence: 92%

Critical velocity in resonantly driven polariton superfluids

Pigeon

Aftalion

2021

Physica D: Nonlinear Phenomena

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We study the necessary condition under which a resonantly driven exciton polariton superfluid flowing against an obstacle can generate turbulence. The value of the critical velocity is well estimated by the transition from elliptic to hyperbolic of an operator following ideas developed by Frisch, Pomeau, Rica [1] for a superfluid flow around an obstacle, though the nature of equations governing the polariton superfluid is quite different. We find analytical estimates depending on the pump amplitude and on the pump energy detuning, quite consistent with our numerical computations.

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“…Motived by Ref. [24], an immediate theoretical work [27] has investigated superfluidity in a nonequilibrium polariton fluid injected by a coherent pump and flowing against a defect located outside the pump spot. The role of a reservoir in inducing nonstationary behaviors with moving phase singularities is highlighted.…”

Section: Introductionmentioning

confidence: 99%

“…However, the theoretical treatment of Ref. [27] is limited within the case of a polariton condensate with the resonant pumping, where the long-range coherence is directly imprinted by the laser, and not the result of a condensation mechanism. Meanwhile, the non-resonant pumping allows one to create a condensate with spontaneously chosen phase profile.…”

Section: Introductionmentioning

confidence: 99%

Drag force of a exciton-polariton condensate under non-resonant pumping

He,

Liang

2020

Preprint

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Exciton-polariton condensate in semiconductor microcavities constitute a novel kind of nonequilibrium superfluid. In a recent experiment [P. Stepanov, et. al., Nat. Commun. 10, 1038(2019], the dispersion relation of collective excitations in a polariton condensate under the resonant pumping has been investigated with the emphasis on the role of reservoir of long-lived excitons in determining the superfluidity. Inspired by such an experimental advance, we study the superfluidity of a exciton-polaritonn condensate under non-resonant pumping by calculating the drag force exerted on a classical impurity moving in a polariton condensate. For a non-resonant pumped polariton condensate prepared in the gapped phase, due to the reservoir's modes, the drag force can be large when the velocity of the impurity is small. Besides, as the velocity increases, the drag force can decrease. For not very large velocity, the drag force is enhanced if the condensate is tuned to be more dissipative. When the condensate is close to the transition point between the gapped phase and the gapless one, the drag force is similar to that of the equilibrium superfluid. Our present work reveals the effects of the reservoir's modes on the superfluidity properties of a polariton condensate with the non-resonant pumping.

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Perspectives in superfluidity in resonantly driven polariton fluids

Abstract: In this section, we review the driven-dissipative Gross-Pitaevskii equation that is currently used to describe the hydrodynamics of exciton-polaritons fluids under a co-arXiv:1905.05855v2 [cond-mat.quant-gas]

Cited by 20 publications

References 22 publications

Polariton fluids for analogue gravity physics

Polariton fluids for analogue gravity physics

Critical velocity in resonantly driven polariton superfluids

Drag force of a exciton-polariton condensate under non-resonant pumping

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