Spatio-temporal Fermionization of Strongly Interacting 1D Bosons

Details Spatio-temporal Fermionization of Strongly Interacting 1D Bosons Spatio-temporal Fermionization of Strongly Interacting 1D Bosons

2012-01-24

arxiv.org/abs/1201.5015v1

Physics

Condensed Matter

Quantum Gases

Scientific paper

Building on the recent experimental achievements obtained with scanning electron microscopy on ultracold atoms, we study one-dimensional Bose gases in the crossover between the weakly (quasi-condensate) and the strongly interacting (Tonks-Girardeau) regime. We measure the temporal two-particle correlation function and compare it with calculations performed using the Time Evolving Block Decimation (TEBD) algorithm. Clear antibunching is observed when entering the strongly interacting regime. The onset of fermionization is also reflected in the density distribution, which we measure \emph{in situ} to extract the relevant parameters and to identify the different regimes. Our results show very good agreement between experiment and theory and give new insight into the dynamics of strongly correlated many-body systems.

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