Recent landmark 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. Here we present a theoretical model to simulate such an output coupler for a Tonks- Girardeau gas that shows excellent agreement with the experimental results for atom transport and output coupling. The solid theoretical basis our model provides allows us to explore non-equilibrium transport phenomena in ultra-cold quantum gases and leads us to predict a regime of atom blockade, where the impurity component becomes localised 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.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Rutherford, L., Goold, J., Busch, T., & McCann, J. F. (2011). Transport, atom blockade and output coupling in a Tonks-Girardeau gas. Physical Review A, 83(5), . https://doi.org/10.1103/PhysRevA.83.055601