Spatial coherence properties of one dimensional exciton-polariton condensates

J. Fischer, I.G. Savenko, M.D. Fraser, S. Holzinger, S. Brodbeck, M. Kamp, I.A. Shelykh, C. Schneider, S. Höfling

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41 Citations (Scopus)


In this work, we combine a systematic experimental investigation of the power- and temperature-dependent evolution of the spatial coherence function, g(1)(r), in a one dimensional exciton-polariton channel with a modern microscopic numerical theory based on a stochastic master equation approach. The spatial coherence function g(1)(r) is extracted via high-precision Michelson interferometry, which allows us to demonstrate that in the regime of nonresonant excitation, the dependence g(1)(r) reaches a saturation value with a plateau, which is determined by the intensity of the pump and effective temperature of the crystal lattice. The theory, which was extended to allow for treating incoherent excitation in a stochastic frame, matches the experimental data with good qualitative and quantitative agreement. This allows us to verify the prediction that the decay of the off-diagonal long-range order can be almost fully suppressed in one dimensional condensate systems.
Original languageEnglish
Number of pages5
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 14 Nov 2014


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