Results 71 to 80 of about 20,873 (170)

Fulde–Ferrell superfluids in spinless ultracold Fermi gases

open access: yesNew Journal of Physics, 2018
The Fulde–Ferrell (FF) superfluid phase, in which fermions form finite momentum Cooper pairings, is well studied in spin-singlet superfluids in past decades. Different from previous works that engineer the FF state in spinful cold atoms, we show that the
Zhen-Fei Zheng   +3 more
doaj   +1 more source

Collective excitations of a Bose–Einstein condensate of hard-core bosons and their mediated interactions: from two-body bound states to mediated superfluidity

open access: yesNew Journal of Physics, 2023
The exchange of collective modes has been demonstrated to be a powerful tool for inducing superconductivity and superfluidity in various condensed matter and atomic systems. In this article, we study the mediated interactions of collective excitations in
Moroni Santiago-García   +1 more
doaj   +1 more source

Fermi Condensates

open access: yes, 2005
Ultracold atomic gases have proven to be remarkable model systems for exploring quantum mechanical phenomena. Experimental work on gases of fermionic atoms in particular has seen large recent progress including the attainment of so-called Fermi ...
Greiner, Markus   +2 more
core   +1 more source

Neural-network quantum states for ultra-cold Fermi gases

open access: yesCommunications Physics
Ultra-cold Fermi gases exhibit a rich array of quantum mechanical properties, including the transition from a fermionic superfluid Bardeen-Cooper-Schrieffer (BCS) state to a bosonic superfluid Bose-Einstein condensate (BEC). While these properties can be
Jane Kim   +7 more
doaj   +1 more source

Direct observation of ultrafast many-body electron dynamics in an ultracold Rydberg gas

open access: yesNature Communications, 2016
Studying long-range interactions in the controlled environment of trapped ultracold gases can help our understanding of fundamental many-body physics.
Nobuyuki Takei   +8 more
doaj   +1 more source

Manipulating Majorana fermions in one-dimensional spin-orbit coupled atomic Fermi gases

open access: yes, 2012
Majorana fermions are promising candidates for storing and processing information in topological quantum computation. The ability to control such individual information carriers in trapped ultracold atomic Fermi gases is a novel theme in quantum ...
Drummond, P. D., Liu, Xia-Ji
core   +2 more sources

Parametric excitation and squeezing in a many-body spinor condensate

open access: yesNature Communications, 2016
Ultracold atomic gases with collisional interactions allow the exploration of quantum many-body physics. Here, the authors vary over time the contributions to the interaction energy to coherently control the spin state of an atomic Bose gas, thereby ...
T. M. Hoang   +6 more
doaj   +1 more source

Ultracold atomic Fermi-Bose mixtures in bichromatic optical dipole traps: a novel route to study fermion superfluidity

open access: yes, 2004
The study of low density, ultracold atomic Fermi gases is a promising avenue to understand fermion superfluidity from first principles. One technique currently used to bring Fermi gases in the degenerate regime is sympathetic cooling through a reservoir ...
Onofrio, R., Presilla, C.
core   +1 more source

Solitons and vortices in ultracold fermionic gases

open access: yes, 2001
We investigate the possibilities of generation of solitons and vortices in a degenerate gas of neutral fermionic atoms. In analogy with, already experimentally demonstrated, technique applied to gaseous Bose-Einstein condensate we propose the phase ...
Dobrek Let al   +3 more
core   +1 more source

Fractionalized topological defects in optical lattices

open access: yesNew Journal of Physics, 2015
Topological objects are interesting topics in various fields of physics ranging from condensed matter physics to the grand unified and superstring theories. Among those, ultracold atoms provide a playground to study the complex topological objects.
Xing-Hai Zhang   +3 more
doaj   +1 more source

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