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Jotzu G, Messer M, Görg F, et al. Creating State-Dependent Lattices for Ultracold Fermions by Magnetic Gradient Modulation. Phys Rev Lett. 2015;115(7):073002doi: 10.1103/PhysRevLett.115.073002.
Jotzu, G., Messer, M., Görg, F., Greif, D., Desbuquois, R., & Esslinger, T. (2015). Creating State-Dependent Lattices for Ultracold Fermions by Magnetic Gradient Modulation. Physical review letters, 115(7), 073002. https://doi.org/10.1103/PhysRevLett.115.073002
Jotzu, Gregor, et al. "Creating State-Dependent Lattices for Ultracold Fermions by Magnetic Gradient Modulation." Physical review letters vol. 115,7 (2015): 073002. doi: https://doi.org/10.1103/PhysRevLett.115.073002
Jotzu G, Messer M, Görg F, Greif D, Desbuquois R, Esslinger T. Creating State-Dependent Lattices for Ultracold Fermions by Magnetic Gradient Modulation. Phys Rev Lett. 2015 Aug 14;115(7):073002. doi: 10.1103/PhysRevLett.115.073002. Epub 2015 Aug 13. PMID: 26317717.
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Phys Rev Lett. 2015 Aug 14;115(7):073002. doi: 10.1103/PhysRevLett.115.073002. Epub 2015 Aug 13.

Creating State-Dependent Lattices for Ultracold Fermions by Magnetic Gradient Modulation.

Physical review letters

Gregor Jotzu, Michael Messer, Frederik Görg, Daniel Greif, Rémi Desbuquois, Tilman Esslinger

Affiliations

  1. Institute for Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland.

PMID: 26317717 DOI: 10.1103/PhysRevLett.115.073002

Abstract

We demonstrate a versatile method for creating state-dependent optical lattices by applying a magnetic field gradient modulated in time. This allows for tuning the relative amplitude and sign of the tunneling for different internal states. We observe substantially different momentum distributions depending on the spin state of fermionic ^{40}K atoms. Using dipole oscillations, we probe the spin-dependent band structure and find good agreement with theory. In situ expansion dynamics demonstrate that one state can be completely localized while others remain itinerant. A systematic study shows negligible heating and lifetimes of several seconds in the Hubbard regime.

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