Hyoungsoon Choi: Quantized Vortices in Exciton-Polariton Condensate
Автор: PCS Institute for Basic Science
Загружено: 2022-07-13
Просмотров: 634
Title: Quantized Vortices in Exciton-Polariton Condensate
Abstract:
Despite their short lifetime in comparison to thermalization time, exciton-polaritons, quasiparticles formed inside a microcavity-quantum-well structure, are found to condense into their ground state, much like a Bose-Einstein condensate (BEC). Whether one can call such exciton-polariton condensate, an intrinsically non-equilibrium condensate, a BEC is debatable, but they do reveal unique properties of a superfluid including formation of quantized vortices. In this talk, I will describe a relatively simple technique for creating these quantized vortices in exciton-polariton condensate [1] and show time resolved dynamics of the vortex formation and extinction [2]. The observed effect is well-described by the driven-dissipative Gross-Pitaevskii equation coupled with pumping reservoirs.
[1] M. -S. Kwon and B. Y. Oh et al., Phys. Rev. Lett. 122, 045302 (2019).
[2] D. Choi and M. Park et al., Phys. Rev. B 105, L060502 (2022).
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