Optical bistability in electrically driven polariton condensates

Amthor, M.; Metzger, Christian; Brodbeck, Sebastian; Worschech, L.; Kamp, M.; Schneider, Christian; Hoefling, Sven; Liew, Timothy Chi Hin; Shelykh, I. A.; Kavokin, A. V.

doi:10.1103/physrevb.91.081404

Cited by 33 publications

(19 citation statements)

References 42 publications

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“…The origin of the bistability has been previously explained by a dependence of the electron-hole tunneling lifetime on the carrier density, which creates a positive feedback loop 44 . Experiment.-Since it is not self evident that the system remains in strong coupling with a high amount of applied noise, figures 2a) and 2b) show the input-output characterization with a relatively high noise level of 0.21 ∆A.…”

Section: Methodsmentioning

confidence: 99%

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Electrical and optical switching in the bistable regime of an electrically injected polariton laser

et al. 2017

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We report on electrically and non-resonant optically induced switching in the bistable regime of an electrically pumped polariton laser. Electrical switching effects can be observed by adding controlled noise in the electrical pump of the system. Noise is expected to influence the hysteresis characteristics of a bistable device and determines its application robustness. We find that the hysteresis width decreases symmetrically with a linear dependency until we observe a quenching of the bistability at a certain noise level and the output of the system becomes monostable. Furthermore, we explore the possibility to switch between the two bistable branches by a non-resonant optical pulse. Our experimental findings can be described by a set of rate equations modeling the population dynamics with additional noise terms.

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Section: Methodsmentioning

confidence: 99%

“…44 . In this approach, we describe the system as a set of rate equations that model the relaxation dynamics between the carrier reservoir, the exciton population and the polaritons in the system.…”

Section: Methodsmentioning

confidence: 99%

Electrical and optical switching in the bistable regime of an electrically injected polariton laser

et al. 2017

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“…Mechanisms of electrically controlled bistability were also demonstrated [72] and several theoretical mechanisms of bistability with incoherent excitation remain open [40,73,74].…”

Section: Bistability and Polariton Condensate Memoriesmentioning

confidence: 99%

Bosonic lasers: The state of the art (Review Article)

Kavokin

Liew

Schneider³

et al. 2016

Low Temperature Physics

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Bosonic lasers represent a new generation of coherent light sources. In contrast to conventional, fermionic, lasers they do not require inversion of electronic population and do not rely on the stimulated emission of radiation. Bosonic lasers are based on the spontaneous emission of light by condensates of bosonic quasiparticles. The first realization of bosonic lasers has been reported in semiconductor microcavities where bosonic condensates of exciton-polaritons first studied several decades ago by K.B. Tolpygo can be formed under optical or electronic pumping. In this paper we overview the recent progress in the research area of polaritonics, address the perspective of realization of polariton devices: from bosonic cascade lasers to spin transistors and switches.

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“…Suitable alternatives have been demonstrated for incoherently pumped polaritons using applied external electric fields, which can cause bistability due to density-dependent lifetimes of electron-hole tunneling [10,11], or through Pockelsinduced birefringence [12]. Theoretical schemes have been proposed to induce polariton bistability through modulational instability [13], through strongly saturated absorption [14], or between condensate wave functions of different parity [15].…”

Section: Introductionmentioning

confidence: 99%

Observation of inversion, hysteresis, and collapse of spin in optically trapped polariton condensates

et al. 2019

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The spin and intensity of optically trapped polariton condensates are studied under steady-state elliptically polarized nonresonant pumping. Three distinct effects are observed: (1) spin inversion where condensation occurs in the opposite handedness from the pump, (2) spin and intensity hysteresis as the pump power is scanned, and (3) a sharp "spin collapse" transition in the condensate spin as a function of the pump ellipticity. We show these effects are strongly dependent on trap size and sample position and are linked to small counterintuitive energy differences between the condensate spin components. Our results, which fail to be fully described within the commonly used nonlinear equations for polariton condensates, show that a more accurate microscopic picture is needed to unify these phenomena in a two-dimensional condensate theory.

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Optical bistability in electrically driven polariton condensates

Cited by 33 publications

References 42 publications

Electrical and optical switching in the bistable regime of an electrically injected polariton laser

Electrical and optical switching in the bistable regime of an electrically injected polariton laser

Bosonic lasers: The state of the art (Review Article)

Observation of inversion, hysteresis, and collapse of spin in optically trapped polariton condensates

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