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arXiv · 2310.16598

Breakdown of Temporal Coherence in Photon Condensates

Yijun Tang·Himadri Shekhar Dhar·Rupert F. Oulton·Robert A. Nyman·Florian Mintert
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Abstract

The temporal coherence of an ideal Bose gas increases as the system approaches the Bose-Einstein condensation threshold from below, with coherence time diverging at the critical point. However, counter-examples have been observed for condensates of photons formed in an externally pumped, dye-filled microcavity, wherein the coherence time decreases rapidly for increasing particle number above threshold. This paper establishes intermode correlations as the central explanation for the experimentally observed dramatic decrease in the coherence time beyond critical pump power.

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Yijun Tang, Himadri Shekhar Dhar, Rupert F. Oulton, Robert A. Nyman, Florian Mintert. 2023-10-25. Breakdown of Temporal Coherence in Photon Condensates. https://doi.org/10.1103/physrevlett.132.173601

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