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

7 Scopus citations


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
Issue number3
StatePublished - Feb 1 2007


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Jarrett, T. C., Olaya-Castro, A., & Johnson, N. F. (2007). Optical signatures of quantum phase transitions in a light-matter system. EPL, 77(3), [34001]. https://doi.org/10.1209/0295-5075/77/34001