Pancharatnam-Berry phase in condensate of indirect excitons

Abstract

We report on the observation of the Pancharatnam-Berry phase in a condensate of indirect excitons (IXs) in a GaAs coupled quantum well structure. The Pancharatnam-Berry phase leads to phase shifts of interference fringes in IX interference patterns. Correlations are found between the phase shifts, polarization pattern of IX emission, and onset of IX spontaneous coherence. The Pancharatnam-Berry phase is acquired due to coherent spin precession in IX condensate. The effect of the Pancharatnam-Berry phase on the IX phase pattern is described in terms of an associated momentum.

6 pages, 5 figures + 2 pages supplemental material, 3 supplemental figures

References in corpus (5)

• Spin-to-orbital angular momentum conversion in dielectric metasurfaces
• Topological Polaritons and Excitons in Garden Variety Systems
• Spin-orbit coupled cold exciton condensates
• Effect of spatial resolution on the estimates of the coherence length of excitons in quantum wells
• Fluctuation and Commensurability Effect of Exciton Density Wave

Cited by in corpus (7)

• Spontaneous coherence in spatially extended photonic systems: Non-Equilibrium Bose-Einstein condensation
• Localized bright luminescence of indirect excitons and trions in MoSe${}_2$/WSe${}_2$ van der Waals heterostructure
• Interference dislocations in condensate of indirect excitons
• Transport and localization of indirect excitons in a van der Waals heterostructure
• High-mobility indirect excitons in wide single quantum well
• Long-distance decay-less spin transport in indirect excitons in a van der Waals heterostructure
• Interference dislocations adjacent to emission spot