Results 51 to 60 of about 4,351,101 (232)

Ultracold Dipolar Gases in Optical Lattices

open access: yes, 2011
This tutorial is a theoretical work, in which we study the physics of ultra-cold dipolar bosonic gases in optical lattices. Such gases consist of bosonic atoms or molecules that interact via dipolar forces, and that are cooled below the quantum ...
B Capogrosso-Sansone   +14 more
core   +1 more source

Quantum state reconstruction on atom-chips

open access: yesNew Journal of Physics, 2015
We realize on an atom-chip, a practical, experimentally undemanding, tomographic reconstruction algorithm relying on the time–resolved measurements of the atomic population distribution among atomic internal states.
C Lovecchio   +7 more
doaj   +1 more source

Long time universality of black-hole lasers

open access: yesNew Journal of Physics, 2021
For flowing quantum gases, it has been found that at long times an initial black-hole laser (BHL) configuration exhibits only two possible states: the ground state or a periodic self-oscillating state of continuous emission of solitons.
J R M de Nova   +3 more
doaj   +1 more source

Slow light propagation in trapped atomic quantum gases [PDF]

open access: yes, 2001
We study semi-classical slow light propagation in trapped two level atomic quantum gases. The temperature dependent behaviors of both group velocity and transmissions are compared for low temperature Bose, Fermi, and Boltzman gases within the local ...
A. B. Matsko   +33 more
core   +2 more sources

Single-Atom Quantum Probes for Ultracold Gases Boosted by Nonequilibrium Spin Dynamics [PDF]

open access: yesPhysical Review X, 2019
Quantum probes are atomic-sized devices mapping information of their environment to quantum mechanical states. By improving measurements and at the same time minimizing perturbation of the environment, they form a central asset for quantum technologies ...
Q. Bouton   +7 more
semanticscholar   +1 more source

Tunable transmission of quantum Hall edge channels with full degeneracy lifting in split-gated graphene devices

open access: yesNature Communications, 2017
Quantum point contacts are gate-tunable constrictions allowing for control of charge carrier transmission in 2D electron gases. Here, the authors fabricate a hBN/graphene/hBN van der Waals heterojunction to enable quantum point contact devices in the ...
Katrin Zimmermann   +8 more
doaj   +1 more source

Cavity-assisted preparation and detection of a unitary Fermi gas

open access: yesNew Journal of Physics, 2021
We report on the fast production and weakly destructive detection of a Fermi gas with tunable interactions in a high finesse cavity. The cavity is used both with far off-resonant light to create a deep optical dipole trap, and with near-resonant light to
K Roux, V Helson, H Konishi, J P Brantut
doaj   +1 more source

Single atom detection in ultracold quantum gases: a review of current progress [PDF]

open access: yesReports on progress in physics. Physical Society, 2016
The recent advances in single atom detection and manipulation in experiments with ultracold quantum gases are reviewed. The discussion starts with the basic principles of trapping, cooling and detecting single ions and atoms.
H. Ott
semanticscholar   +1 more source

Method of canonical transformations in the theory of quantum gases interacting with radiation

open access: yesCondensed Matter Physics
 An approach to the theoretical study of effects and phenomena in quantum gases interacting with radiation is proposed. The approach is based on a modification of the canonical transformation method, which was once used to diagonalize Hamiltonians ...
M. S. Bulakhov   +4 more
doaj   +1 more source

Measuring work and heat in ultracold quantum gases

open access: yesNew Journal of Physics, 2015
We propose a feasible experimental scheme to direct measure heat and work in cold atomic setups. The method is based on a recent proposal which shows that work is a positive operator valued measure (POVM). In the present contribution, we demonstrate that
Gabriele De Chiara   +2 more
doaj   +1 more source

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