Half-Skyrmion Spin Textures In Polariton Microcavities

Abstract

We study the polarization dynamics of a spatially expanding polariton condensate under nonresonant linearly polarized optical excitation. The spatially and temporally resolved polariton emission reveals the formation of non-trivial spin textures in the form of a quadruplet polarization pattern both in the linear and circular Stokes parameters, and an octuplet in the diagonal Stokes parameter. The continuous rotation of the polariton pseudospin vector through the condensate due to TE-TM splitting exhibits an ordered pattern of half-skyrmions associated with a half-integer topological number. A theoretical model based on a driven-dissipative Gross-Pitaevskii equation coupled with an exciton reservoir describes the dynamics of the nontrivial spin textures through the optical spin-Hall effect.

13 pages, 9 figures

References in corpus (10)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum fluids of light
• Exciton-polariton condensates
• Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons
• Transmutation from Skyrmions to Half-Solitons Driven by the Nonlinear Optical Spin-Hall Effect
• Spatial Coherence Properties of One-Dimensional Exciton-Polariton-Condensates
• Spontaneous symmetry breaking in a polariton and photon laser
• Spin-to-Orbital Angular Momentum Conversion in Semiconductor Microcavities
• Optical control of spin textures in quasi-one-dimensional polariton condensates
• Polariton Spin Whirls

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• Geometric frustration in polygons of polariton condensates creating vortices of varying topological charge
• Optical orientation, polarization pinning, and depolarization dynamics in optically confined polariton condensates
• Spontaneous formation of time-periodic vortex cluster in nonlinear fluids of light
• Topological optical skyrmion transfer to matter
• Multivalley engineering in semiconductor microcavities
• Polarization and phase textures in lattice plasmon condensates
• Paramagnetic resonance in spin-polarized disordered Bose-Einstein condensates
• Screening nearest-neighbor interactions in networks of exciton-polariton condensates through spin orbit coupling
• Optical polarization skyrmionic fields in free space
• Intrinsic Meron Spin Textures in Generic Focused Fields
• Pulse, polarization and topology shaping of polariton fuids
• Collective excitations of exciton-polariton condensates in a synthetic gauge field