Spontaneous microcavity-polariton coherence across the parametric threshold: Quantum Monte Carlo studies

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dc.creatorCarusotto, Iacopo
dc.creatorCiuti, Cristiano
dc.date2005-04-21
dc.date.accessioned2026-07-07T06:24:35Z
dc.date.available2026-07-07T06:24:35Z
dc.descriptionWe investigate the appearance of spontaneous coherence in the parametric emission from planar semiconductor microcavities in the strong coupling regime. Calculations are performed by means of a Quantum Monte Carlo technique based on the Wigner representation of the coupled exciton and cavity-photon fields. The numerical results are interpreted in terms of a non-equilibrium phase transition occurring at the parametric oscillation threshold: below the threshold, the signal emission is incoherent, and both the first and the second-order coherence functions have a finite correlation length which becomes macroscopic as the threshold is approached. Above the threshold, the emission is instead phase-coherent over the whole two-dimensional sample and intensity fluctuations are suppressed. Similar calculations for quasi-one-dimensional microcavities show that in this case the phase-coherence of the signal emission has a finite extension even above the threshold, while intensity fluctuations are suppressed.
dc.identifierhttps://arxiv.org/abs/cond-mat/0504554
dc.identifierhttp://arxiv.org/abs/cond-mat/0504554
dc.identifierPhysical Review B 72 (2005) 125335
dc.identifierdoi:10.1103/PhysRevB.72.125335
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96592
dc.subjectOther Condensed Matter
dc.titleSpontaneous microcavity-polariton coherence across the parametric threshold: Quantum Monte Carlo studies
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