Topological turbulence in spin-orbit–coupled driven-dissipative quantum fluids of light generates high-angular-momentum states
Résumé
We demonstrate the formation of a high-angular-momentum turbulent state in an
exciton-polariton quantum fluid with TE-TM Spin-Orbit Coupling (SOC). The transfer of particles
from quasi-resonantly cw pumped σ+ component to σ− component is accompanied with the
generation of a turbulent gas of quantum vortices by inhomogeneities. We show that this system
is unstable with respect to the formation of bogolons at a finite wave vector, controlled by the
laser detuning. This instability can be triggered by an inhomogeneity of the pumping profile as in
present calculations or by other sources like natural disorder in the cavity. In a finite-size cavity,
the domains with this wave vector form a ring-like structure along the border of the cavity, with
a gas of mostly same-sign vortices in the center. The total angular momentum is imposed by the
sign of TE-TM SOC, the wave vector at which the instability develops, and the cavity size. This
effect can be detected experimentally via local dispersion measurements or by interference. The
proposed configuration thus allows simultaneous experimental studies of quantum turbulence and
high-angular-momentum states in continuously pumped exciton-polariton condensates.
Domaines
Physique [physics]Origine | Fichiers produits par l'(les) auteur(s) |
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