Long-range order in the Bose-Einstein condensation of polaritons

Journal Article · Thu Mar 15 00:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.75.115326· OSTI ID:20957781

Sarchi, D; Savona, V ^[1]

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1. Institute of Theoretical Physics, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne (Switzerland)

We adopt a kinetic theory of polariton nonequilibrium Bose-Einstein condensation to describe the formation of off-diagonal long-range order. The theory accounts properly for the dominant role of quantum fluctuations in the condensate. In realistic situations with optical excitation at high energy, it predicts a significant depletion of the condensate caused by long-wavelength fluctuations. As a consequence, the one-body density matrix in space displays a partially suppressed long-range order and a pronounced dependence on the finite size of the system.

• OSTI ID: 20957781
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 11; Other Information: DOI: 10.1103/PhysRevB.75.115326; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOSE-EINSTEIN CONDENSATION
CONDENSATES
DENSITY MATRIX
EXCITATION
FLUCTUATIONS
KINETIC EQUATIONS
POLARONS
WAVELENGTHS