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Observation of Feshbach resonances between alkali and closed-shell atoms
Magnetic Feshbach resonances allow control of the interactions between ultracold atoms1. They are an invaluable tool in studies of few-body and many-body physics2,3, and can be used to convert pairs…
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Efficient production of long-lived ultracold Sr 2 molecules
We associate Sr atom pairs on sites of a Mott insulator optically and coherently into weakly bound ground-state molecules, achieving an efficiency above 80%. This efficiency is 2.5 times higher than…
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Particle statistics affects quantum decay and Fano interference.
TLDR
It is experimentally demonstrated that particle statistics strongly affects quantum mechanical decay in a multiparticle system and can tune many-body quantum decay from fractional to complete.
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Fermionic statistics suppresses Fano resonances
Andrea Crespi, Linda Sansoni, Giuseppe Della Valle, 1 Alessio Ciamei, Roberta Ramponi, 3 Fabio Sciarrino, ∗ Paolo Mataloni, Stefano Longhi, 1, † and Roberto Osellame 3, ‡ Istituto di Fotonica e…
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The RbSr 2Σ+ ground state investigated via spectroscopy of hot and ultracold molecules.
TLDR
A mass-scaled high-precision model for X(1)2Σ+ by fitting all data using a single fit procedure, which is consistent with all data, thus spanning short-to-long internuclear distances and bridging an energy gap of about 75% of the potential well depth, still uncharted by any experiment.
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Realization of a cold mixture of fermionic chromium and lithium atoms
We report on the production of a novel cold mixture of fermionic $^{53}$Cr and $^{6}$Li atoms delivered by two Zeeman-slowed atomic beams and collected within a magneto-optical trap (MOT). For…
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Observation of Bose-enhanced photoassociation products
We produce molecules using Bose-enhanced Raman photoassociation. We apply the stimulated Raman adiabatic passage (STIRAP) technique on a Bose-Einstein condensate (BEC) to produce more than ultracold…
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Exploring ultracold collisions in $^6$Li-$^{53}$Cr Fermi mixtures: Feshbach resonances and scattering properties of a novel alkali-transition metal system
We investigate ultracold collisions in a mixture of 6 Li and 53 Cr fermionic atoms by exploring six different Li-Cr spin channels via loss spectroscopy. We pinpoint more than 50 interspecies Feshbach…
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Taming ultracold RbSr and Sr 2
Ultracold molecules have recently attracted much attention because of their envisioned impact on both technology and fundamental science. The physics within them, i.e. their rich internal structure,…
The RbSr Σ ground state investigated via spectroscopy of hot & ultracold molecules
We report on spectroscopic studies of hot and ultracold RbSr molecules, and combine the results in an analysis that allows us to fit a potential energy curve (PEC) for the X(1)Σ ground state bridging…
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