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Confinement induced molecules in a 1D Fermi gas

Henning Moritz·Thilo Stöferle·Kenneth Günter·Michael Köhl·Tilman Esslinger
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Abstract

We have observed two-particle bound states of atoms confined in a one-dimensional matter wave guide. These bound states exist irrespective of the sign of the scattering length, contrary to the situation in free space. Using radio-frequency spectroscopy we have measured the binding energy of these dimers as a function of the scattering length and confinement and find good agreement with theory. The strongly interacting one-dimensional Fermi gas which we create in an optical lattice represents a realization of a tunable Luttinger liquid.

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Henning Moritz, Thilo Stöferle, Kenneth Günter, Michael Köhl, Tilman Esslinger. 2005-06-03. Confinement induced molecules in a 1D Fermi gas. https://doi.org/10.1103/physrevlett.94.210401

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