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Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature.

ABSTRACT: Spin-orbit coupling plays an important role in the spin Hall effect and topological insulators. Bose-Einstein condensates with spin-orbit coupling show remarkable quantum phase transition. In this work we control an exciton polariton condensate - a macroscopically coherent state of hybrid light and matter excitations - by virtue of the Rashba-Dresselhaus (RD) spin-orbit coupling. This is achieved in a liquid-crystal filled microcavity where CsPbBr₃ perovskite microplates act as the gain material at room temperature. Specifically, we realize an artificial gauge field acting on the CsPbBr₃ exciton polariton condensate, splitting the condensate fractions with opposite spins in both momentum and real space. Besides the ground states, higher-order discrete polariton modes can also be split by the RD effect. Our work paves the way to manipulate exciton polariton condensates with a synthetic gauge field based on the RD spin-orbit coupling at room temperature.

SUBMITTER: Li Y

PROVIDER: S-EPMC9249758 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature

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Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature.

Li Yao Y Ma Xuekai X Zhai Xiaokun X Gao Meini M Dai Haitao H Schumacher Stefan S Gao Tingge T

Nature communications 20220701 1

Spin-orbit coupling plays an important role in the spin Hall effect and topological insulators. Bose-Einstein condensates with spin-orbit coupling show remarkable quantum phase transition. In this work we control an exciton polariton condensate - a macroscopically coherent state of hybrid light and matter excitations - by virtue of the Rashba-Dresselhaus (RD) spin-orbit coupling. This is achieved in a liquid-crystal filled microcavity where CsPbBr<sub>3</sub> perovskite microplates act as the ga ...[more]

PMID: 35778391

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