2005/03/31 by Henning Moritz, Thilo Stöferle, Kenneth Günter +2
Physics and Astronomy · #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.94.210401
published as Phys. Rev. Lett. 94, 210401 (2005) · 4 pages
arxiv created 2005/06/03 · arxiv updated 2009/12/01
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.