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Photon-number-resolved measurement of an exciton-polariton condensate
Klaas, M. Schlottmann, E. Flayac, H. Laussy, F. P. Gericke, F. Schmidt, M. Helversen, M. v. Beyer, J. Brodbeck, S. Suchomel, H.
Klaas, M.
Schlottmann, E.
Flayac, H.
Laussy, F. P.
Gericke, F.
Schmidt, M.
Helversen, M. v.
Beyer, J.
Brodbeck, S.
Suchomel, H.
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2018-07-25
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Abstract
We measure the full photon-number distribution emitted from a Bose condensate of microcavity exciton polaritons confined in a micropillar cavity. The statistics are acquired by means of a photon-number-resolving transition edge sensor. We directly observe that the photon-number distribution evolves with the nonresonant optical excitation power from geometric to quasi-Poissonian statistics, which is canonical for a transition from a thermal to a coherent state. Moreover, the photon-number distribution allows one to evaluate the higher-order photon correlations, shedding further light on the coherence formation and phase transition of the polariton condensate. The experimental data are analyzed in terms of thermal-coherent states, which gives direct access to the thermal and coherent fraction from the measured distributions. These results pave the way for a full understanding of the contribution of interactions in light-matter condensates in the coherence buildup at threshold.
Citation
Klaas, M., Schlottmann, E., Flayac, H., Laussy, FP., Gericke, F., Schmidt, M., v. Helversen, M., Beyer, J., Brodbeck, S., Suchomel, H., Höfling, S., Reitzenstein, S. and Schneider, C. (2018) 'Photon-number-resolved measurement of an exciton-polariton condensate', Physical Review Letters, 121 (4)
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Journal article
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en
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0031-9007
1079-7114
1079-7114
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Ministry of Science and Education of the Russian Federation (Grant No. RFMEFI61617X0085)