Ultralong temporal coherence in optically trapped exciton-polariton condensates

Konstantinos Orfanakis, A Tzortzakakis, D Petrosyan, P Savvidis, Hamid Ohadi*

*Corresponding author for this work

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We investigate an optically trapped exciton-polariton condensate and observe temporal coherence beyond 1 ns in duration. Due to the reduction of the spatial overlap with the thermal reservoir of excitons, the coherence time of the trapped condensate is more than an order of magnitude longer than that of an untrapped condensate. This ultralong coherence enables high-precision spectroscopy of the trapped condensate, and we observe periodic beats of the field correlation function due to a fine energy splitting of two polarization modes of the condensate. Our results are important for realizing polariton simulators with spinor condensates in lattice potentials.

Original languageEnglish
Article number235313
Number of pages7
JournalPhysical Review. B, Condensed matter and materials physics
Issue number23
Publication statusPublished - 21 Jun 2021


  • Bose-Einstein condensation
  • Lifetimes


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