Robust quantum correlations in out-of-equilibrium matter-light systems

O. L. Acevedo, L. Quiroga, F. J. Rodríguez, N. F. Johnson

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

High precision macroscopic quantum control in interacting light-matter systems remains a significant goal toward novel information processing and ultra-precise metrology. We show that the out-of-equilibrium behavior of a paradigmatic light-matter system (Dicke model) reveals two successive stages of enhanced quantum correlations beyond the traditional schemes of near-adiabatic and sudden quenches. The first stage features magnification of matter-only and light-only entanglement and squeezing due to effective nonlinear self-interactions. The second stage results from a highly entangled light-matter state, with enhanced superradiance and signatures of chaotic and highly quantum states. We show that these new effects scale up consistently with matter system size, and are reliable even in dissipative environments.

Original languageEnglish (US)
Article number093005
JournalNew Journal of Physics
Volume17
Issue number9
DOIs
StatePublished - Sep 9 2015

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Keywords

  • lightmatter interaction
  • non-equilibirum many-body quantum physics
  • quantum correlation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Acevedo, O. L., Quiroga, L., Rodríguez, F. J., & Johnson, N. F. (2015). Robust quantum correlations in out-of-equilibrium matter-light systems. New Journal of Physics, 17(9), [093005]. https://doi.org/10.1088/1367-2630/17/9/093005