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Updated: May 27, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Observation of local temporal correlations in trapped quantum gases
Vera Guarrera1, Peter Würtz, Arne Ewerbeck
1Research Center OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany. guarrera@physik.uni-kl.de
Abstract:
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.
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