Observation of local temporal correlations in trapped quantum gases

Research output: Contribution to journalArticlepeer-review


  • Peter Wuertz
  • Arne Ewerbeck
  • Andreas Vogler
  • Herwig Ott

Colleges, School and Institutes


We measure the temporal pair correlation function g(2)(τ) of a trapped gas of bosons above and below the critical temperature for Bose-Einstein condensation. The measurement is performed in situ by using a local, time-resolved single-atom sensitive probing technique. Third- and fourth-order correlation functions are also extracted. We develop a theoretical model and compare it with our experimental data, finding good quantitative agreement. We discuss, finally, the role of interactions. Our results promote temporal correlations as new observables to study the dynamical evolution of ultracold quantum gases.


Original languageEnglish
JournalPhysical Review Letters
Issue number160403
Publication statusPublished - 14 Oct 2011


  • cond-mat.quant-gas, quant-ph