Penrose-Onsager criterion validation in a one-dimensional polariton condensate

F. Manni, K. G. Lagoudakis, R. André, M. Wouters, B. Deveaud

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We perform quantum tomography on one-dimensional polariton condensates, spontaneously occurring in linear disorder valleys in a CdTe planar microcavity sample. By the use of optical interferometric techniques, we determine the first-order coherence function and the amplitude and phase of the order parameter of the condensate, providing a full reconstruction of the single particle density matrix for the polariton system. The experimental data are used as input to theoretically test the consistency of the Penrose-Onsager criterion for Bose-Einstein condensation in the framework of nonequilibrium polariton condensates. The results confirm the pertinence and validity of the criterion for a nonequilibrium condensed gas.
Original languageEnglish
Article number150409
Number of pages5
JournalPhys. Rev. Lett.
Issue number15
Publication statusPublished - 1 Oct 2012


  • Penrose-Onsager criterion
  • polariton condensates
  • quantum tomography
  • optical interferometric techniques


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