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, and S. Höfling
Phys. Rev. Lett. 113, 203902 – Published 14 November 2014
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Abstract

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.

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  • Received 12 April 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.203902

© 2014 American Physical Society

Authors & Affiliations

J. Fischer1, I. G. Savenko2,3, M. D. Fraser4, S. Holzinger1, S. Brodbeck1, M. Kamp1, I. A. Shelykh5,6, C. Schneider1, and S. Höfling1,7

  • 1Technische Physik, Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
  • 2QCD Labs, COMP Centre of Excellence, Department of Applied Physics and Low Temperature Laboratory (OVLL), Aalto University, P.O. Box 13500, FI-00076 Aalto, Finland
  • 3National Research University of Information Technologies, Mechanics and Optics (ITMO), St. Petersburg 197101, Russia
  • 4Quantum Optics Research Group, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
  • 5Science Institute, University of Iceland, Dunhagi 3, IS-107 Reykjavik, Iceland
  • 6Division of Physics and Applied Physics, Nanyang Technological University, 637371 Singapore, Singapore
  • 7SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, United Kingdom

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Issue

Vol. 113, Iss. 20 — 14 November 2014

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