Optical signatures of quantum phase transitions in a light-matter system

T. C. Jarrett, A. Olaya-Castro, N. F. Johnson

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Information about quantum phase transitions in conventional condensed matter systems, must be sought by probing the matter system itself. By contrast, we show that mixed matter-light systems offer a distinct advantage in that the photon field carries clear signatures of the associated quantum critical phenomena. Having derived an accurate, size-consistent Hamiltonian for the photonic field in the well-known Dicke model, we predict striking behavior of the optical squeezing and photon statistics near the phase transition. The corresponding dynamics resemble those of a degenerate parametric amplifier. Possible realizations include atom-cavity, nanostructure-cavity, and nanostructure-photonic-band-gap systems.

Original languageEnglish (US)
Article number34001
JournalEPL
Volume77
Issue number3
DOIs
StatePublished - Feb 1 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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