Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature

Yao Li, Xuekai Ma (), Xiaokun Zhai, Meini Gao, Haitao Dai, Stefan Schumacher and Tingge Gao ()
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Yao Li: Tianjin University
Xuekai Ma: Universität Paderborn
Xiaokun Zhai: Tianjin University
Meini Gao: Tianjin University
Haitao Dai: Tianjin University
Stefan Schumacher: Universität Paderborn
Tingge Gao: Tianjin University

Nature Communications, 2022, vol. 13, issue 1, 1-6

Abstract: 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.

Date: 2022
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DOI: 10.1038/s41467-022-31529-4

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