Realization of an excited, strongly correlated quantum gas phase

Elmar Haller, Mattias Gustavsson, Manfred J. Mark, Johann G. Danzl, Russell Hart, Guido Pupillo, Hanns-Christoph Nägerl

Research output: Contribution to journalArticle

354 Citations (Scopus)

Abstract

Ultracold atomic physics offers myriad possibilities to study strongly correlated many-body systems in lower dimensions. Typically, only ground-state phases are accessible. Using a tunable quantum gas of bosonic cesium atoms, we realized and controlled in one-dimensional geometry a highly excited quantum phase that is stabilized in the presence of attractive interactions by maintaining and strengthening quantum correlations across a confinement-induced resonance. We diagnosed the crossover from repulsive to attractive interactions in terms of the stiffness and energy of the system. Our results open up the experimental study of metastable, excited, many-body phases with strong correlations and their dynamical properties.
Original languageEnglish
Pages (from-to)1224-1227
Number of pages4
JournalScience
Volume325
Issue number5945
DOIs
Publication statusPublished - 4 Sep 2009

Keywords

  • quantum gas phase
  • ultracold atomic physics
  • confinement-induced resonance
  • bosonic cesium atoms

Cite this

Haller, E., Gustavsson, M., Mark, M. J., Danzl, J. G., Hart, R., Pupillo, G., & Nägerl, H-C. (2009). Realization of an excited, strongly correlated quantum gas phase. Science, 325(5945), 1224-1227. https://doi.org/10.1126/science.1175850