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arXiv · 2402.18266

Second-order temporal coherence of polariton lasers based on an atomically thin crystal in a microcavity

Hangyong Shan·Jens-Christian Drawer·Meng Sun·Carlos Anton-Solanas·Martin Esmann·Kentaro Yumigeta·Kenji Watanabe·Takashi Taniguchi·Sefaattin Tongay·Sven Höfling·Ivan Savenko·Christian Schneider
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Abstract

Bosonic condensation and lasing of exciton-polaritons in microcavities is a fascinating solid-state phenomenon. It provides a versatile platform to study out-of-equilibrium many-body physics and has recently appeared at the forefront of quantum technologies. Here, we study the photon statistics via the second-order temporal correlation function of polariton lasing emerging from an optical microcavity integrated with an atomically thin MoSe2 crystal. Furthermore, we investigate the macroscopic polariton phase transition for varying excitation powers and temperatures. The lower-polariton exhibits photon bunching below the threshold, implying a dominant thermal distribution of the emission, while above the threshold, the second-order correlation transits towards unity, which evidences the formation of a coherent state. Our findings are in agreement with a microscopic numerical model, which explicitly includes scattering with phonons on the quantum level.

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Hangyong Shan, Jens-Christian Drawer, Meng Sun, Carlos Anton-Solanas, Martin Esmann, Kentaro Yumigeta, Kenji Watanabe, Takashi Taniguchi, Sefaattin Tongay, Sven Höfling, Ivan Savenko, Christian Schneider. 2024-02-28. Second-order temporal coherence of polariton lasers based on an atomically thin crystal in a microcavity. https://doi.org/10.1103/physrevlett.131.206901

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