Results 1 to 10 of about 389,331 (298)

Oscillations in a parametrically excited Bose-Einstein condensate in combined harmonic and optical lattice trap

open access: yesOpen Physics, 2012
In this work, we study parametric resonances in an elongated cigar-shaped BEC in a combined harmonic trap and a time dependent optical lattice by using numerical and analytical techniques.
Verma Priyanka   +2 more
doaj   +2 more sources

On the Potential of Augmented Reality for Mathematics Teaching with the Application cleARmaths

open access: yesEducation Sciences, 2021
Learning content in mathematics, such as vector geometry, is still predominantly taught in an abstract manner, as the visualization and interaction of three-dimensional problems are limited with classical forms of teaching such as blackboard lessons or ...
Stefanie Schutera   +10 more
doaj   +1 more source

Moiré superlattice structures in a rotating two-component Bose–Einstein condensates

open access: yesResults in Physics, 2022
We investigate the Moiré superlattice structures generated by the interplay between vortex lattice and optical lattice in two-component Bose–Einstein condensates. Square vortex lattices are generated in both components of the rapidly rotating condensates,
Jingjing Jin   +3 more
doaj   +1 more source

Multifrequency optical lattice for dynamic lattice-geometry control

open access: yesPhysical Review Research, 2022
Ultracold atoms in optical lattices are pristine model systems with a tunability and flexibility that goes beyond solid-state analogies, e.g., dynamical lattice-geometry changes allow tuning a graphene lattice into a boron-nitride lattice.
M. N. Kosch   +4 more
doaj   +1 more source

Nonlinear Excitations in Ultracold Atoms Trapped in Triple Optical Lattices

open access: yesCondensed Matter, 2022
Various solitary wave excitations are found for a Bose-Einstein condensate in presence of two hybrid potentials in the form of triple mixtures of optical lattices. One of these potentials comprises of a combination of two important lattice profiles, such
Pradosh Basu   +3 more
doaj   +1 more source

Feasibility Study for a Chemical Process Particle Size Characterization System for Explosive Environments Using Low Laser Power

open access: yesMicromachines, 2020
The industrial particle sensor market lacks simple, easy to use, low cost yet robust, safe and fast response solutions. Towards development of such a sensor, for in-line use in micro channels under continuous flow conditions, this work introduces static ...
Jesse Ross-Jones   +7 more
doaj   +1 more source

Optical deceleration of atomic hydrogen

open access: yesNew Journal of Physics, 2023
We demonstrate control over the motional degrees of freedom of a cryogenic hydrogen atomic beam using an accelerating optical lattice. For our method, we load metastable atoms from a cryogenic beam into a moving optical lattice, decelerate the lattice ...
S F Cooper   +4 more
doaj   +1 more source

Photoionization of Rydberg atoms in optical lattices

open access: yesNew Journal of Physics, 2021
We develop a formalism for photoionization (PI) and potential energy curves (PECs) of Rydberg atoms in ponderomotive optical lattices and apply it to examples covering several regimes of the optical-lattice depth.
R Cardman   +4 more
doaj   +1 more source

On the formation of antihydrogen beams using travelling optical lattices

open access: yesNew Journal of Physics, 2021
The production of beams of antihydrogen atoms using the dipole force provided by a travelling optical lattice to accelerate a sample of the anti-atoms held in a magnetic gradient atom trap is investigated.
N Madsen, M Charlton
doaj   +1 more source

Electronic Structure and Optical Properties of Cu2ZnSnS4 under Stress Effect

open access: yesCrystals, 2022
By using the pseudopotential plane-wave method of first principles based on density functional theory, the band structure, density of states and optical properties of Cu2ZnSnS4 under isotropic stress are calculated and analyzed.
Xiufan Yang   +5 more
doaj   +1 more source

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