Journal of the European Optical Society - Rapid publications, Vol 3 (2008)

Bose-Einstein condensation in semiconductors: myth or reality?

J. Kasprzak, M. Richard, R. André, L.S. Dang


Bose-Einstein condensation, predicted for a gas of non interacting bosons in 1924 by Einstein, has been demonstrated for the first time in 1995 in a dilute gas of rubidium atoms at temperatures below 10^–6 K. In this work, it is shown that Bose-Einstein condensation can be achieved at around 15 – 20 K in a solid state system by using microcavity polaritons, which are composite bosons of mass ten billion times lighter than that of rubidium atoms.

© The Authors. All rights reserved. [DOI: 10.2971/jeos.2008.08023]

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See for example: and

D. Snoke, "Spontaneous Bose coherence of excitons and polaritons" Science 298, 1368 (2002).

A. Kavokin, and G. Malpuech, Cavity polaritons (Elsevier, Amsterdam, 2003).

J. Kasprzak, M. Richard, S. Kundermann, A. Baas, P. Jeambrun, J. M. J. Keeling, F. M. Marchetti, M. H. Szyma´nska, R. André, J. L. Staehli, V. Savona, P. B. Littlewood, B. Deveaud, and Le Si Dang, "Bose-Einstein condensation of exciton polaritons" Nature 443, 409-414 (2006).

J. Kasprzak, M. Richard, A. Baas, B. Deveaud, R. Andre, J.-Ph. Poizat, and Le Si Dang, "Second-Order Time Correlations within a Polariton Bose-Einstein Condensate in a CdTe Microcavity" Phys. Rev. Lett. 100, 067402 (2008).