期刊
PHYSICAL REVIEW B
卷 97, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.045303
关键词
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资金
- Center for Excitonics, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001088]
- Skoltech as part of the Skoltech-MIT Next Generation Program
- National Science Foundation [DMR-1151810, DMR-1104383]
- CIRG 21 Grant from City University of New York
- Gordon and Betty Moore Foundation through EPiQS initiative Grant [GBMF4420]
- National Science Foundation MRSEC Grant [DMR-1420541]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1151810] Funding Source: National Science Foundation
We report multistate optical switching among high-order bouncing-ball modes (ripples) and whispering-gallery modes (petals) of exciton-polariton condensates in a laser-generated annular trap. By tailoring the diameter and power of the annular trap, the polariton condensate can be switched among different trapped modes, accompanied by redistribution of spatial densities and superlinear increase in the emission intensities, implying that polariton condensates in this geometry could be exploited for an all-optical multistate switch. A model based on non-Hermitian modes of the generalized Gross-Pitaevskii equation reveals that this mode switching arises from competition between pump-induced gain and in-plane polariton loss. The parameters for reproducible switching among trapped modes have been measured experimentally, giving us a phase diagram for mode switching. Taken together, the experimental result and theoretical modeling advance our fundamental understanding of the spontaneous emergence of coherence and move us toward its practical exploitation.
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