Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Valtolina, G."'
Autor:
Scazza, F., Valtolina, G., Amico, A., Tavares, P. E. S., Inguscio, M., Ketterle, W., Roati, G., Zaccanti, M.
Publikováno v:
Phys. Rev. A 101, 013603 (2020)
Recent experiments have revitalized the interest in a Fermi gas of ultracold atoms with strong repulsive interactions. In spite of its seeming simplicity, this system exhibits a complex behavior, resulting from the competing action of two distinct in
Externí odkaz:
http://arxiv.org/abs/1910.14279
Autor:
Amico, A., Scazza, F., Valtolina, G., Tavares, P. E. S., Ketterle, W., Inguscio, M., Roati, G., Zaccanti, M.
Publikováno v:
Phys. Rev. Lett. 121, 253602 (2018)
We exploit a time-resolved pump-probe spectroscopic technique to study the out-of-equilibrium dynamics of an ultracold two-component Fermi gas, selectively quenched to strong repulsion along the upper branch of a broad Feshbach resonance. For critica
Externí odkaz:
http://arxiv.org/abs/1807.10208
Autor:
Burchianti, A., Scazza, F., Amico, A., Valtolina, G., Seman, J. A., Fort, C., Zaccanti, M., Inguscio, M., Roati, G.
Publikováno v:
Phys. Rev. Lett. 120, 025302 (2018)
We study the emergence of dissipation in an atomic Josephson junction between weakly-coupled superfluid Fermi gases. We find that vortex-induced phase slippage is the dominant microscopic source of dissipation across the BEC-BCS crossover. We explore
Externí odkaz:
http://arxiv.org/abs/1707.02784
Autor:
Scazza, F., Valtolina, G., Massignan, P., Recati, A., Amico, A., Burchianti, A., Fort, C., Inguscio, M., Zaccanti, M., Roati, G.
Publikováno v:
Phys. Rev. Lett. 118, 083602 (2017)
We employ radio-frequency spectroscopy to investigate a polarized spin-mixture of ultracold ${}^6$Li atoms close to a broad Feshbach scattering resonance. Focusing on the regime of strong repulsive interactions, we observe well-defined coherent quasi
Externí odkaz:
http://arxiv.org/abs/1609.09817
Publikováno v:
Phys. Rev. A 95, 013634 (2017)
The spin-asymmetric Josephson effect is a proposed quantum-coherent tunnelling phenomenon where Cooper-paired fermionic spin-$\frac{1}{2}$ particles, which are subjected to spin-dependent potentials across a Josephson junction, undergo frequency-sync
Externí odkaz:
http://arxiv.org/abs/1608.07080
Autor:
Valtolina, G., Scazza, F., Amico, A., Burchianti, A., Recati, A., Enss, T., Inguscio, M., Zaccanti, M., Roati, G.
Publikováno v:
Nature Physics 13, 704-709 (2017)
Ferromagnetism is a manifestation of strong repulsive interactions between itinerant fermions in condensed matter. Whether short-ranged repulsion alone is sufficient to stabilize ferromagnetic correlations in the absence of other effects, like peculi
Externí odkaz:
http://arxiv.org/abs/1605.07850
Autor:
Valtolina, G., Burchianti, A., Amico, A., Neri, E., Xhani, K., Seman, J. A., Trombettoni, A., Smerzi, A., Zaccanti, M., Inguscio, M., Roati, G.
We report on the observation of the Josephson effect between two strongly interacting fermionic superfluids coupled through a thin tunneling barrier. We prove that the relative population and phase are canonically conjugate dynamical variables, coher
Externí odkaz:
http://arxiv.org/abs/1508.00733
Autor:
Burchianti, A., Valtolina, G., Seman, J. A., Pace, E., De Pas, M., Inguscio, M., Zaccanti, M., Roati, G.
We use a gray molasses operating on the D$_1$ atomic transition to produce degenerate quantum gases of $^{6}$Li with a large number of atoms. This sub-Doppler cooling phase allows us to lower the initial temperature of 10$^9$ atoms from 500 to 40 $\m
Externí odkaz:
http://arxiv.org/abs/1406.4788
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