Association of ultracold double-species bosonic molecules (2008)
Weber, C., Barontini, G., Catani, J., Thalhammer, G., Inguscio, M., Minardi, F.
We report on the creation of heterospecies bosonic molecules, associated from an ultracold Bose-Bose mixture of 41K and 87Rb, by using a resonantly modulated magnetic field close to two Feshbach...
Magnetic dipolar interaction in an atomic Bose Einstein condensate interferometer (2008)
Fattori, M., Roati, G., Deissler, B., D'Errico, C., Zaccanti, M., Jona-Lasinio, M., ...
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-wave interaction to...
Anderson localization of a non-interacting Bose-Einstein condensate (2008)
Roati, G., D'Errico, C., Fallani, L., Fattori, M., Fort, C., Zaccanti, M., ...
One of the most intriguing phenomena in physics is the localization of waves in disordered media. This phenomenon was originally predicted by Anderson, fifty years ago, in the context of transport of...
Double species condensate with tunable interspecies interactions (2008)
Thalhammer, G., Barontini, G., De Sarlo, L., Catani, J., Minardi, F., Inguscio, M.
We produce Bose-Einstein condensates of two different species, $^{87}$Rb and $^{41}$K, in an optical dipole trap in proximity of interspecies Feshbach resonances. We discover and characterize two...
Noise correlation spectroscopy of the broken order of a Mott insulating phase (2008)
Guarrera, V., Fabbri, N., Fallani, L., Fort, C., Inguscio, M.
We use a two-color lattice to break the homogeneous site occupation of an atomic Mott Insulator of bosonic 87Rb. We detect the disruption of the ordered Mott domains via noise correlation analysis of...
Simoni, A., Zaccanti, M., D'Errico, C., Fattori, M., Roati, G., Inguscio, M., ...
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 observations of resonance...
A joint search for gravitational wave bursts with AURIGA and LIGO (2008)
Baggio, L., Bignotto, M., Bonaldi, M., Cerdonio, M., De Rosa, M., Falferi, P., ...
The first simultaneous operation of the AURIGA detector(63) and the LIGO observatory(64) was an opportunity to explore real data, joint analysis methods between two very different types of...
Quantum Physics Exploring Gravity in the Outer Solar System: The Sagas Project (2007)
Wolf, P., Bordé, Ch. J., Clairon, A., Duchayne, L., Landragin, A., Lemonde, P., ...
We summarise the scientific and technological aspects of the SAGAS (Search for Anomalous Gravitation using Atomic Sensors) project, submitted to ESA in June 2007 in response to the Cosmic Vision...
Degenerate Bose-Bose mixture in a three-dimensional optical lattice (2007)
Catani, J., De Sarlo, L., Barontini, G., Minardi, F., Inguscio, M.
We produce a heteronuclear quantum degenerate mixture of two bosonic species, $^{87}$Rb and $^{41}$K, in a three-dimensional optical lattice. On raising the lattice barriers, we observe the...
Feshbach resonances in ultracold K(39) (2007)
D'Errico, C., Zaccanti, M., Fattori, M., Roati, G., Inguscio, M., Modugno, G., ...
We discover several magnetic Feshbach resonances in collisions of ultracold K(39) atoms, by studying atom losses and molecule formation. Accurate determination of the magnetic-field resonance...
39-K Bose-Einstein condensate with tunable interactions (2007)
Roati, G., Zaccanti, M., D'Errico, C., Catani, J., Modugno, M., Simoni, A., ...
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 cooling with 87-Rb...
Collisional properties of sympathetically cooled $^{39}$K (2007)
De Sarlo, L., Maioli, P., Barontini, G., Catani, J., Minardi, F., Inguscio, M.
We report the experimental evidence of the sympathetic cooling of $^{39}$K with $^{87}$Rb down to 1 $\mu$K, obtained in a novel tight confining magnetic trap. This allowed us to perform the first...
Lye, J. E., Fallani, L., Fort, C., Guarrera, V., Modugno, M., Wiersma, D. S., ...
The transport properties of a Bose-Einstein condensate in a 1D incommensurate bichromatic lattice are investigated both theoretically and experimentally. We observe a blockage of the center of mass...
Control of the interaction in a Fermi-Bose mixture (2006)
Zaccanti, M., D'Errico, C., Ferlaino, F., Roati, G., Inguscio, M., Modugno, G.
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 bosonic 87Rb. We...
Towards a Bose-Glass of ultracold atoms in a disordered crystal of light (2006)
Fallani, L., Lye, J. E., Guarrera, V., Fort, C., Inguscio, M.
Starting from one-dimensional Mott Insulators, we use a bichromatic optical lattice to add controlled disorder to an ideal optical crystal where bosonic atoms are pinned by repulsive interactions....
Intense slow beams of bosonic potassium isotopes (2005)
Catani, J., Maioli, P., De Sarlo, L., Minardi, F., Inguscio, M.
We report on an experimental realization of a two-dimensional magneto-optical trap (2D-MOT) that allows the generation of cold atomic beams of 39K and 41K bosonic potassium isotopes. The high...
Fort, C., Fallani, L., Guarrera, V., Lye, J., Modugno, M., Wiersma, D. S., ...
We investigate the one-dimensional expansion of a Bose-Einstein condensate in an optical guide in the presence of a random potential created with optical speckles. With the speckle the expansion of...
Baggio, L., Bignotto, M., Bonaldi, M., Cerdonio, M., Conti, L., De Rosa, M., ...
At the time when the giant flare of SGR1806-20 occurred, the AURIGA "bar" gw detector was on the air with a noise performance close to stationary gaussian. This allows to set relevant upper limits,...
Unstable regimes for a Bose-Einstein condensate in an optical lattice (2004)
De Sarlo, L., Fallani, L., Lye, J. E., Modugno, M., Saers, R., Fort, C., ...
We report on the experimental characterization of energetic and dynamical instability, two mechanisms responsible for the breakdown of Bloch waves in a Bose-Einstein condensate interacting with a 1D...
A Bose-Einstein condensate in a random potential (2004)
Lye, J. E., Fallani, L., Modugno, M., Wiersma, D., Fort, C., Inguscio, M.
An optical speckle potential is used to investigate the static and dynamic properties of a Bose-Einstein condensate in the presence of disorder. For strong disorder the condensate is localized in the...
Atom Interferometry in a Vertical Optical Lattice (2004)
Modugno, G., De Mirandes, E., Ferlaino, F., Ott, H., Roati, G., Inguscio, M.
We have studied the interference of degenerate quantum gases in a vertical optical lattice. The coherence of the atoms leads to an interference pattern when the atoms are released from the lattice....
Radio Frequency Selective Addressing of Localized Particles in a Periodic Potential (2004)
Ott, H., De Mirandes, E., Ferlaino, F., Roati, G., Türck, V., Modugno, G., ...
We study the localization and addressability of ultra cold atoms in a combined parabolic and periodic potential. Such a potential supports the existence of localized stationary states and we show...
Fallani, L., De Sarlo, L., Lye, J. E., Modugno, M., Saers, R., Fort, C., ...
We have experimentally studied the unstable dynamics of a harmonically trapped Bose-Einstein condensate loaded into a 1D moving optical lattice. The lifetime of the condensate in such a potential...
Atom interferometry with trapped Fermi gases (2004)
Roati, G., De Mirandes, E., Ferlaino, F., Ott, H., Modugno, G., Inguscio, M.
We realize an interferometer with an atomic Fermi gas trapped in an optical lattice under the influence of gravity. The single-particle interference between the eigenstates of the lattice results in...
Insulating Behavior of a Trapped Ideal Fermi Gas (2004)
Pezze', L., Pitaevskii, L., Smerzi, A., Stringari, S., Modugno, G., DeMirandes, E., ...
We investigate theoretically and experimentally the center-of-mass motion of an ideal Fermi gas in a combined periodic and harmonic potential. We find a crossover from a conducting to an insulating...
Expansion of a Fermi gas interacting with a Bose-Einstein condensate (2003)
Ferlaino, F., De Mirandes, E., Roati, G., Modugno, G., Inguscio, M.
We study the expansion of an atomic Fermi gas interacting attractively with a Bose-Einstein condensate. We find that the interspecies interaction affects dramatically both the expansion of the Fermi...
Superfluid current disruption in a chain of weakly coupled Bose-Einstein Condensates (2003)
Cataliotti, F. S., Fallani, L., Ferlaino, F., Fort, C., Maddaloni, P., Inguscio, M.
We report the experimental observation of the disruption of the superfluid atomic current flowing through an array of weakly linked Bose-Einstein condensates. The condensates are trapped in an...
Collisionally Induced Transport in Periodic Potentials (2003)
Ott, H., De Mirandes, E., Ferlaino, F., Roati, G., Modugno, G., Inguscio, M.
We study the transport of ultra cold atoms in a tight optical lattice. For identical fermions the system is insulating under an external force while for bosonic atoms it is conducting. This reflects...
Superradiant light scattering from a moving Bose-Einstein condensate (2003)
Bonifacio, R., Cataliotti, F. S., Cola, M., Fallani, L., Fort, C., Piovella, N., ...
We investigate the interaction of a moving BEC with a far detuned laser beam. Superradiant Rayleigh scattering arises from the spontaneous formation of a matter-wave grating due to the interference...
Mean-field analysis of the stability of a K-Rb Fermi-Bose mixture (2003)
Modugno, M., Ferlaino, F., Riboli, F., Roati, G., Modugno, G., Inguscio, M.
We compare the experimental stability diagram of a Fermi-Bose mixture of K-40 and Rb-87 atoms with attractive interaction to the predictions of a mean-field theoretical model. We discuss how this...
Production of a Fermi gas of atoms in an optical lattice (2003)
Modugno, G., Ferlaino, F., Heidemann, R., Roati, G., Inguscio, M.
We prepare a degenerate Fermi gas of potassium atoms by sympathetic cooling with rubidium atoms in a one-dimensional optical lattice. In a tight lattice we observe a change of the density of states...
Optically-induced lensing effect on a Bose-Einstein condensate expanding in a moving lattice (2003)
Fallani, L., Cataliotti, F. S., Catani, J., Fort, C., Modugno, M., Zawada, M., ...
We report the experimental observation of a lensing effect on a Bose-Einstein condensate expanding in a moving 1D optical lattice. The effect of the periodic potential can be described by an...
Magnetic control of the interaction in ultracold K-Rb mixtures (2003)
Simoni, A., Ferlaino, F., Roati, G., Modugno, G., Inguscio, M.
We predict the presence of several magnetic Feshbach resonances in selected Zeeman sublevels of the isotopic pairs K(40)-Rb(87) and K(41)-Rb(87) at magnetic fields up to 1000 G. Positions and widths...
Dipolar oscillations in a quantum degenerate Fermi-Bose atomic mixture (2002)
Ferlaino, F., Brecha, R. J., Hannaford, P., Riboli, F., Roati, G., Modugno, G., ...
We study the dynamics of coupled dipolar oscillations in a Fermi-Bose mixture of $^{40}$K and $^{87}$Rb atoms. This low-energy collective mode is strongly affected by the interspecies interactions....
Fort, C., Cataliotti, F. S., Fallani, L., Ferlaino, F., Maddaloni, P., Inguscio, M.
We study low-lying collective modes of a horizontally elongated 87Rb condensate produced in a 3D magnetic harmonic trap with the addition of a 1D periodic potential which is provided by a laser...
Enhancement of the scissors mode of an expanding Bose-Einstein condensate (2002)
Modugno, M., Modugno, G., Roati, G., Fort, C., Inguscio, M.
We study the time-evolution of the scissors mode of a Bose-Einstein condensate during the ballistic expansion after release from the magnetic trap. We show that despite the nontrivial character of...
A Novel Mechanism for Superfluidity Breakdown in Weakly Coupled Bose-Einstein Condensates (2002)
Cataliotti, F. S., Fallani, L., Ferlaino, F., Fort, C., Maddaloni, P., Inguscio, M., ...
This paper has been withdrawn by the authors. The authors have now written two separate papers, one theoretical (A. Smerzi, A. Trombettoni, P. G. Kevrekidis, and A. R. Bishop Phys. Rev. Lett. 89,...
A two atomic species superfluid (2002)
Modugno, G., Modugno, M., Riboli, F., Roati, G., Inguscio, M.
We produce a quantum degenerate mixture composed by two Bose-Einstein condensates of different atomic species, 41 K and 87 Rb. We study the dynamics of the superfluid system in an elongated magnetic...
Fermi-Bose quantum degenerate ^40 K - ^87 Rb mixture with attractive interaction (2002)
Roati, G., Riboli, F., Modugno, G., Inguscio, M.
We report on the achievement of simultaneous quantum degeneracy in a mixed gas of fermionic ^40 K and bosonic ^87 Rb. Potassium is cooled to 0.3 times the Fermi temperature by means of an efficient...
Ferlaino, F., Maddaloni, P., Burger, S., Cataliotti, F. S., Fort, C., Modugno, M., ...
The macroscopic coherent tunneling through the barriers of a periodic potential is used as an atomoptical filter to separate the condensate and the thermal components of a $^{87}$Rb mixed cloud. We...
Collisional properties of ultracold K-Rb mixtures (2002)
Ferrari, G., Inguscio, M., Jastrzebski, W., Modugno, G., Roati, G., Simoni, A.
We determine the inter-species s-wave triplet scattering length a3 for all K-Rb isotopic mixtures by measuring the cross-section for collisions between 41K and 87Rb in different temperature regimes....
Bose-Einstein Condensates in a 1D Optical Lattice (2001)
Burger, S., Cataliotti, F. S., Ferlaino, F., Fort, C., Maddaloni, P., Minardi, F., ...
We give an overview on current experiments on Bose-Einstein condensation (BEC) in a one-dimensional (1D) optical lattice. We introduce measurements of ground state, tunnelling and dynamical...
Josephson Junction Arrays with Bose-Einstein Condensates (2001)
Cataliotti, F. S., Burger, S., Fort, C., Maddaloni, P., Minardi, F., Trombettoni, A., ...
We report on the direct observation of an oscillating atomic current in a one-dimensional array of Josephson junctions realized with an atomic Bose-Einstein condensate. The array is created by a...
Quasi 2D Bose-Einstein condensation in an optical lattice (2001)
Burger, S., Cataliotti, F. S., Fort, C., Maddaloni, P., Minardi, F., Inguscio, M.
We study the phase transition of a gas of Rb atoms to quantum degeneracy in the combined potential of a harmonically confining magnetic trap and the periodic potential of an optical lattice. For high...
Expansion of a coherent array of Bose-Einstein condensates (2001)
Pedri, P., Pitaevskii, L., Stringari, S., Fort, C., Burger, S., Cataliotti, F. S., ...
We investigate the properties of a coherent array containing about 200 Bose-Einstein condensates produced in a far detuned 1D optical lattice. The density profile of the gas, imaged after releasing...
Damping and frequency shift in the oscillations of two colliding Bose-Einstein condensates (2001)
Modugno, M., Fort, C., Maddaloni, P., Minardi, F., Inguscio, M.
We have investigated the center-of-mass oscillations of a Rb87 Bose-Einstein condensate in an elongated magneto-static trap. We start from a trapped condensate and we transfer part of the atoms to...
Modugno, G., Roati, G., Inguscio, M., Santos, M. S., Telles, G. D., Marcassa, L. G., ...
We report a comparative investigation of trap loss rates in a magneto-optical trap for two potassium isotopes, 39K and 40K, as a function of trap light intensity. The isotopes present a quite similar...
Time-domain atom interferometry across the threshold for Bose-Einstein condensation (2001)
Minardi, F., Fort, C., Maddaloni, P., Modugno, M., Inguscio, M.
We have performed time-domain interferometry experiments with matter waves trapped in an harmonic potential above and below the Bose-Einstein phase transition. We interrogate the atoms according to...
Burger, S., Cataliotti, F. S., Fort, C., Minardi, F., Inguscio, M., Chiofalo, M. L., ...
We create Bose-Einstein condensates of 87-rubidium in a static magnetic trap with a superimposed blue-detuned 1D optical lattice. By displacing the magnetic trap center we are able to control the...
Spatial interference of coherent atomic waves by manipulation of the internal quantum state (2001)
Fort, C., Maddaloni, P., Minardi, F., Modugno, M., Inguscio, M.
A trapped 87Rb Bose-Einstein condensate is initially put into a superposition of two internal states. Under the effect of gravity and by means of a second transition, we prepare two vertically...
Josephson Junction Arrays with Bose-Einstein Condensates (2001)
Cataliotti, F.S., Burger, S., Fort, C., Maddaloni, P., Minardi, Francesco, Trombettoni, Andrea, ...
We report on the direct observation of an oscillating atomic current in a one-dimensional array of Josephson junctions realized with an atomic Bose-Einstein condensate. The array is created by a...
An Optical Trap for Collisional Studies on Cold Fermionic Potassium (2000)
Roati, G., Jastrzebski, W., Simoni, A., Modugno, G., Inguscio, M.
We report on trapping of fermionic 40K atoms in a red-detuned standing-wave optical trap, loaded from a magneto-optical trap. Typically, 10^6 atoms are loaded at a density of 10^12 cm^-3 and a...
Collective oscillations of two colliding Bose-Einstein condensates (2000)
Maddaloni, P., Modugno, M., Fort, C., Minardi, F., Inguscio, M.
Two 87Rb condensates (F=2, m_f=2 and m_f=1) are produced in highly displaced harmonic traps and the collective dynamical behaviour is investigated. The mutual interaction between the two condensates...
Production Of Multiple 87Rb Condensates And Atom Lasers By Rf Coupling (2000)
Minardi, F., Fort, C., Maddaloni, P., Inguscio, M.
We have investigated the rf output coupling of a 87Rb condensate from a Ioffe-Pritchard magnetic trap. Multiple condensates in different Zeeman states are produced, their population being varied by...
Sub-Doppler Laser Cooling of Fermionic K-40 Atoms (1999)
Modugno, G., Benko, C., Hannaford, P., Roati, G., Inguscio, M.
We report laser cooling of fermionic K-40 atoms, with temperatures down to (15 +/- 5) microK, for an enriched sample trapped in a MOT and additionaly cooled in optical molasses. This temperature is a...
Quantum degeneracy and interaction effects in spin-polarized Fermi-Bose mixtures (1998)
Vichi, L., Inguscio, M., Stringari, S., Tino, G. M.
Various features of spin-polarized Fermi gases confined in harmonic traps are discussed, taking into account possible perspectives of experimental measurements. The mechanism of the expansion of the...
Power amplifier for 1083nm using ytterbium-doped fibre (1997)
Paschotta, R, Hanna, D C, DeNatale, P, Modugno, G, Inguscio, M, Laporta, P
Power amplifier for 1083nm using ytterbium-doped fibre (1997)
Paschotta, R, Hanna, D C, DeNatale, P, Modugno, G, Inguscio, M, Laporta, P
Power amplifier for 1083nm using ytterbium-doped fibre (1997)
Paschotta, R, Hanna, D C, DeNatale, P, Modugno, G, Inguscio, M, Laporta, P
Power amplifier for 1083nm using ytterbium-doped fibre (1997)
Paschotta, R, Hanna, D C, DeNatale, P, Modugno, G, Inguscio, M, Laporta, P
HIGH RESOLUTION INTERMODULATED AND DOUBLE RESONANCE ATOMIC SPECTROSCOPY IN A HOLLOW CATHODE (1983)
The performances of a hollow cathode discharge tube developed for high resolution optogalvanic spectroscopy of both refractory and volatile elements are illustrated. Hyperfine and isotopic structures...