Optical Bistability under Nonresonant Excitation in Spinor Polariton Condensates

L. Pickup, K. Kalinin, A. Askitopoulos, Z. Hatzopoulos, P. G. Savvidis, N. G. Berloff, P. G. Lagoudakis

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)

    Abstract

    We realize bistability in the spinor of polariton condensates under nonresonant optical excitation and in the absence of biasing external fields. Numerical modeling of the system using the Ginzburg-Landau equation with an internal Josephson coupling between the two spin components of the condensate qualitatively describes the experimental observations. We demonstrate that polariton spin bistability strongly depends on the condensate's overlap with the exciton reservoir by tuning the excitation geometry and sample temperature. We obtain noncollapsing bistability hysteresis loops for a record range of sweep times, [10 μs, 1 s], offering a promising route to spin switches and spin memory elements.

    Original languageEnglish
    Article number225301
    JournalPhysical Review Letters
    Volume120
    Issue number22
    DOIs
    Publication statusPublished - 30 May 2018

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