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Lukoshkin V, Sedov E, Kalevich V, Hatzopoulos Z, Savvidis PG, Kavokin A. Steady state oscillations of circular currents in concentric polariton condensates. Sci Rep 2023; 13:4607. [PMID: 36944664 PMCID: PMC10030576 DOI: 10.1038/s41598-023-31520-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/13/2023] [Indexed: 03/23/2023] Open
Abstract
Concentric ring exciton polariton condensates emerging under non-resonant laser pump in an annular trapping potential support persistent circular currents of polaritons. The trapping potential is formed by a cylindrical micropillar etched in a semiconductor microcavity with embedded quantum wells and a repulsive cloud of optically excited excitons under the pump spot. The symmetry of the potential is subject to external control via manipulation by its pump-induced component. In the manuscript, we demonstrate excitation of concentric ring polariton current states with predetermined vorticity which we trace using interferometry measurements with a spherical reference wave. We also observe the polariton condensate dynamically changing its vorticity during observation, which results in pairs of fork-like dislocations on the time-averaged interferogram coexisting with azimuthally homogeneous photoluminescence distribution in the micropillar.
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Affiliation(s)
- Vladimir Lukoshkin
- Ioffe Institute,Russian Academy of Sciences, 26 Politechnicheskaya, St-Petersburg, Russia, 194021
- Spin Optics Laboratory, St. Petersburg State University, Ulyanovskaya 1, St. Petersburg, Russia, 198504
| | - Evgeny Sedov
- Spin Optics Laboratory, St. Petersburg State University, Ulyanovskaya 1, St. Petersburg, Russia, 198504.
- Russian Quantum Center, 100 Novaya Street, Skolkovo, Moscow, Russia, 143025.
- Stoletov Vladimir State University, Gorky str. 87, Vladimir, Russia, 600000.
| | - Vladimir Kalevich
- Ioffe Institute,Russian Academy of Sciences, 26 Politechnicheskaya, St-Petersburg, Russia, 194021
- Spin Optics Laboratory, St. Petersburg State University, Ulyanovskaya 1, St. Petersburg, Russia, 198504
| | - Z Hatzopoulos
- FORTH-IESL, P.O. Box 1527, 71110, Heraklion, Crete, Greece
| | - P G Savvidis
- FORTH-IESL, P.O. Box 1527, 71110, Heraklion, Crete, Greece
- Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Rd, Hangzhou, 310024, Zhejiang, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
- Department of Materials Science and Technology, University of Crete, P.O. Box 2208, 71003, Heraklion, Crete, Greece
| | - Alexey Kavokin
- Spin Optics Laboratory, St. Petersburg State University, Ulyanovskaya 1, St. Petersburg, Russia, 198504
- Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Rd, Hangzhou, 310024, Zhejiang, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
- Moscow Institute of Physics and Technology, Institutskiy per., 9, Dolgoprudnyi, Moscow Region, Russia, 141701
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