Nonequilibrium Mass Transport in the 1D Fermi-Hubbard Model.
Phys Rev Lett
American Physical Society (APS)
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Scherg, S., Kohlert, T., Herbrych, J., Stolpp, J., Bordia, P., Schneider, U., Heidrich-Meisner, F., et al. (2018). Nonequilibrium Mass Transport in the 1D Fermi-Hubbard Model.. Phys Rev Lett, 121 (13), 130402. https://doi.org/10.1103/PhysRevLett.121.130402
We experimentally and numerically investigate the sudden expansion of fermions in a homogeneous one-dimensional optical lattice. For initial states with an appreciable amount of doublons, we observe a dynamical phase separation between rapidly expanding singlons and slow doublons remaining in the trap center, realizing the key aspect of fermionic quantum distillation in the strongly interacting limit. For initial states without doublons, we find a reduced interaction dependence of the asymptotic expansion speed compared to bosons, which is explained by the interaction energy produced in the quench.
0206 Quantum Physics
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External DOI: https://doi.org/10.1103/PhysRevLett.121.130402
This record's URL: https://www.repository.cam.ac.uk/handle/1810/280225
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