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Laser-induced thermal source for cold atoms [PDF]

open access: yesScientific Reports, 2022
We demonstrate a simple and compact approach to laser cool and trap atoms based on laser-induced thermal ablation (LITA) of a pure solid granule. A rapid thermalisation of the granule leads to a fast recovery of the ultra-high vacuum condition required ...
Chung Chuan Hsu   +3 more
doaj   +2 more sources

Electric Field Excitation Suppression in Cold Atoms

open access: yesAtoms, 2020
In this article, the atom excitation suppression is studied in two mechanisms. The first mechanism for excitation suppression is caused by an external DC electric field.
Jianing Han   +2 more
doaj   +3 more sources

Quantum many-body models with cold atoms coupled to photonic crystals [PDF]

open access: yesNature Photonics, 2015
Using cold atoms to simulate strongly interacting quantum systems represents an exciting frontier of physics. However, as atoms are nominally neutral point particles, this limits the types of interactions that can be produced.
Alexey Gorshkov
exaly   +7 more sources

Momentum Halo in The Rayleigh Scattering by a Bose–Einstein Condensate

open access: yesAtoms, 2022
A ring of radius ℏk0 in the momentum distribution of a Bose–Einstein condensate is visible when the atoms scatter a single photon. Here, we describe an approximated theory of this effect, leading to an analytic expression of the isotropic momentum ...
Nicola Piovella
doaj   +1 more source

Vacuum pressure measurement of cold 7Li atoms in the magneto-optical and magnetic trap

open access: yesAIP Advances, 2023
Cold atoms play a very important role in metrology. The ultra-high or extreme-high vacuum pressure can be accurately measured by investigating the collision of cold atoms and residual atoms in the environment. We report a vacuum pressure metrometer using
Xuejiao Zhang   +4 more
doaj   +1 more source

Loading Dynamics of Cold Atoms into a Hollow-Core Photonic Crystal Fiber

open access: yesFibers, 2020
Cold atoms trapped and guided in hollow-core photonic crystal fibers provide a scalable diffraction-free setting for atom–light interactions for quantum technologies.
Yu Wang   +5 more
doaj   +1 more source

Classical and Quantum Collective Recoil Lasing: A Tutorial

open access: yesAtoms, 2021
Collective atomic recoil lasing (CARL) is a process during which an ensemble of cold atoms, driven by a far-detuned laser beam, spontaneously organize themselves in periodic structures on the scale of the optical wavelength.
Nicola Piovella   +2 more
doaj   +1 more source

Multimode Collective Atomic Recoil Lasing in Free Space

open access: yesAtoms, 2020
Cold atomic clouds in collective atomic recoil lasing are usually confined by an optical cavity, which forces the light-scattering to befall in the mode fixed by the resonator.
Angel T. Gisbert, Nicola Piovella
doaj   +1 more source

Many-body quantum chaos in stroboscopically-driven cold atoms

open access: yesCommunications Physics, 2023
In quantum chaotic systems, the spectral form factor (SFF), defined as the Fourier transform of two-level spectral correlation function, is known to follow random matrix theory (RMT), namely a ‘ramp’ followed by a ‘plateau’ in late times.
Ceren B. Dağ   +3 more
doaj   +1 more source

Superfluids, Fluctuations and Disorder

open access: yesApplied Sciences, 2019
We present a field-theory description of ultracold bosonic atoms in the presence of a disordered external potential. By means of functional integration techniques, we aim to investigate and review the interplay between disordered energy landscapes and ...
Alberto Cappellaro, Luca Salasnich
doaj   +1 more source

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