Abstract
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 language | English |
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Article number | 150409 |
Number of pages | 5 |
Journal | Phys. Rev. Lett. |
Volume | 109 |
Issue number | 15 |
DOIs | |
Publication status | Published - 1 Oct 2012 |
Keywords
- Penrose-Onsager criterion
- polariton condensates
- quantum tomography
- optical interferometric techniques