Journal
PHYSICAL REVIEW A
Volume 83, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.83.055601
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Funding
- Department for Employment and Learning (Northern Ireland)
- Science Foundation Ireland [05/IN/I852, 05/IN/I852 NS]
- IRCSET
- Science Foundation Ireland (SFI) [05/IN/I852] Funding Source: Science Foundation Ireland (SFI)
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Recent experiments have demonstrated how quantum-mechanical impurities can be created within strongly correlated quantum gases and used to probe the coherence properties of these systems [S. Palzer, C. Zipkes, C. Sias, and M. Kohl, Phys. Rev. Lett. 103, 150601 (2009)]. Here we present a phenomenological model to simulate such an output coupler for a Tonks-Girardeau gas that shows qualitative agreement with the experimental results for atom transport and output coupling. Our model allows us to explore nonequilibrium transport phenomena in ultracold quantum gases and leads us to predict a regime of atom blockade, where the impurity component becomes localized in the parent cloud despite the presence of gravity. We show that this provides a stable mixed-species quantum gas in the strongly correlated limit.
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