Zobrazeno 1 - 10
of 286
pro vyhledávání: '"Minardi, F."'
We report on the formation of multiple quantum droplets in a heteronuclear $^{41}$K-$^{87}$Rb mixture released in an optical waveguide. By a sudden change of the interspecies interaction from the non-interacting to the strongly attractive regime, we
Externí odkaz:
http://arxiv.org/abs/2409.16017
Publikováno v:
Phys. Rev. A 102, 043314 (2020)
Understanding the effect of interactions in the phase evolution of expanding atomic Bose Einstein condensates is fundamental to describe the basic phenomenon of matter wave interference. Many theoretical and experimental works tackled this problem, a
Externí odkaz:
http://arxiv.org/abs/2009.01900
Autor:
Naik, D. S., Eneriz-Imaz, H., Carey, M., Freegarde, T., Minardi, F., Battelier, B., Bouyer, P., Bertoldi, A.
Publikováno v:
Phys. Rev. Research 2, 013212 (2020)
We present a novel optical cooling scheme that relies on hyperfine dark states to enhance loading and cooling atoms inside deep optical dipole traps. We demonstrate a seven-fold increase in the number of atoms loaded in the conservative potential wit
Externí odkaz:
http://arxiv.org/abs/1910.12849
Publikováno v:
Phys. Rev. A 100, 063636 (2019)
We consider a homogeneous heteronuclear Bose mixture with contact interactions at the mean-field collapse, i.e. with interspecies attraction equal to the mean geometrical intraspecies repulsion. We show that the Lee-Huang-Yang (LHY) energy functional
Externí odkaz:
http://arxiv.org/abs/1908.00804
Autor:
D'Errico, C., Burchianti, A., Prevedelli, M., Salasnich, L., Ancilotto, F., Modugno, M., Minardi, F., Fort, C.
Publikováno v:
Phys. Rev. Research 1, 033155 (2019)
We report on the formation of heteronuclear quantum droplets in an attractive bosonic mixture of 41K and 87Rb. We observe long-lived self-bound states, both in free space and in an optical waveguide. In the latter case, the dynamics under the effect
Externí odkaz:
http://arxiv.org/abs/1908.00761
Publikováno v:
Phys. Rev. A 99, 033619 (2019)
We derive an expression for the phase shift of an atom interferometer in a gravitational field taking into account both the finite duration of the light pulses and the effect of a small perturbing potential added to a stronger uniform gravitational f
Externí odkaz:
http://arxiv.org/abs/1812.11890
Autor:
Semeghini, G., Ferioli, G., Masi, L., Mazzinghi, C., Wolswijk, L., Minardi, F., Modugno, M., Modugno, G., Inguscio, M., Fattori, M.
Publikováno v:
Phys. Rev. Lett. 120, 235301 (2018)
Self-bound quantum droplets are a newly discovered phase in the context of ultracold atoms. In this work we report their experimental realization following the original proposal by Petrov [Phys. Rev. Lett. 115, 155302 (2015)], using an attractive bos
Externí odkaz:
http://arxiv.org/abs/1710.10890
Publikováno v:
New J. Phys. 20 (2018) 045001
Quantum dynamics of impurities in a bath of bosons is a long-standing problem of solid-state, plasma, and atomic physics. Recent experimental and theoretical investigations with ultracold atoms focused on this problem, studying atomic impurities imme
Externí odkaz:
http://arxiv.org/abs/1707.09568
Publikováno v:
Scientific Reports 7, (2017) 5105
Motivated by recent experiments and theoretical investigations on binary mixtures, we investigate the miscible-immiscible transition at finite temperature by means of Quantum Monte Carlo. Based on the observation that the segregated phase is strongly
Externí odkaz:
http://arxiv.org/abs/1609.08352
Autor:
Catani, J., Lamporesi, G., Naik, D., Gring, M., Inguscio, M., Minardi, F., Kantian, A., Giamarchi, T.
Publikováno v:
Phys. Rev. A 85, 023623 (2012)
Using a species-selective dipole potential, we create initially localized impurities and investigate their interactions with a majority species of bosonic atoms in a one-dimensional configuration during expansion. We find an interaction-dependent amp
Externí odkaz:
http://arxiv.org/abs/1106.0828