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Magnetic dipolar interaction in an atomic Bose Einstein condensate interferometer
M. Fattori, G. Roati, B. Deissler +6
We study the role played by the magnetic dipole interaction in an atomic interferometer based on an alkali Bose-Einstein condensate with tunable scattering length. We tune the s-wa…
Accurate near-threshold model for ultracold KRb dimers from interisotope Feshbach spectroscopy
A. Simoni, M. Zaccanti, C. D'Errico +4
We investigate magnetic Feshbach resonances in two different ultracold K-Rb mixtures. Information on the K(39)-Rb(87) isotopic pair is combined with novel and pre-existing observat…
Atom interferometry with a weakly-interacting Bose Einstein condensate
Marco Fattori, Chiara D'Errico, Giacomo Roati +5
We demonstrate the operation of an atom interferometer based on a weakly interacting Bose-Einstein condensate. We strongly reduce the interaction induced decoherence that usually l…
39-K Bose-Einstein condensate with tunable interactions
G. Roati, M. Zaccanti, C. D'Errico +5
We produce a Bose-Einstein condensate of 39-K atoms. Condensation of this species with naturally small and negative scattering length is achieved by a combination of sympathetic co…
Control of the interaction in a Fermi-Bose mixture
M. Zaccanti, C. D'Errico, F. Ferlaino +3
We control the interspecies interaction in a two-species atomic quantum mixture by tuning the magnetic field at a Feshbach resonance. The mixture is composed by fermionic 40K and b…
Feshbach spectroscopy of a K-Rb atomic mixture
Francesca Ferlaino, Chiara D'Errico, Giacomo Roati +4
We perform extensive magnetic Feshbach spectroscopy of an ultracold mixture of fermionic 40K and bosonic 87Rb atoms. The magnetic-field locations of 14 interspecies resonances is u…