Pancharatnam-Berry phase in condensate of indirect excitons

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, p...

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Published inarXiv.org
Main Authors Leonard, J R, High, A A, Hammack, A T, Fogler, M M, Butov, L V, Campman, K L, Gossard, A C
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 02.09.2017
Subjects
Condensates
Excitons
Interference fringes
Physics - Mesoscale and Nanoscale Physics
Physics - Quantum Physics
Quantum mechanics
Quantum wells
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1709.00533