Transporting cold atoms using an optically compensated zoom lens

Lee, J. H.; Jung, Haejun; Choi, Jae-yoon; Mun, Jongchul

doi:10.1103/physreva.102.063106

Cited by 7 publications

(7 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In any case, the optical dipole trap can also serve as the initial stage in transferring the prepared atoms ∼40 cm into the science chamber of a dual-species interferometer [9]. This transfer can also be performed using a 1064 nm laser, with a single shifting focus beam using an optically compensated zoom lens [76], for which similar waists and powers are needed.…”

Section: Trapping Transfer and Launching At 1064 Nmmentioning

confidence: 99%

Design and simulation of a source of cold cadmium for atom interferometry

Bandarupally,

Tinsley,

Chiarotti

et al. 2023

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

We present a novel optimised design for a source of cold atomic cadmium, compatible withcontinuous operation and potentially quantum degenerate gas production. The design is based onspatially segmenting the first and second-stages of cooling with the the strong dipole-allowed 1S0-1P1transition at 229 nm and the 326 nm 1S0-3P1 intercombination transition, respectively. Cooling at229 nm operates on an effusive atomic beam and takes the form of a compact Zeeman slower (∼5 cm)and two-dimensional magneto-optical trap (MOT), both based on permanent magnets. This designallows for reduced interaction time with the photoionising 229 nm photons and produces a slowbeam of atoms that can be directly loaded into a three-dimensional MOT using the intercombinationtransition. The efficiency of the above process is estimated across a broad range of experimentallyfeasible parameters via use of a Monte Carlo simulation, with loading rates up to 108 atoms/s intothe 326 nm MOT possible with the oven at only 100 ◦C. The prospects for further cooling in a faroff-resonance optical-dipole trap and atomic launching in a moving optical lattice are also analysed,especially with reference to the deployment in a proposed dual-species cadmium-strontium atominterferometer.

show abstract

Section: Trapping Transfer and Launching At 1064 Nmmentioning

confidence: 99%

Design and simulation of a source of cold cadmium for atom interferometry

Bandarupally,

Tinsley,

Chiarotti

et al. 2023

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

show abstract

“…where G is the de Gennes factor. The applicability of de Gennes scaling for isostructural compounds with exclusive RE 3+ magnetic moments has been investigated extensively, see e. g. [46‐51] …”

Section: Magnetic Susceptibilitymentioning

confidence: 99%

“…A quenching of the orbital moments in these materials can likely be excluded; only in case of DySi 3 some quenching toward a spin‐only magnetic moment may be indicated [46] . More importantly, the mean field approach underlying the de Gennes scaling neglects possible important influences on the magnetic properties of materials, including crystalline electric field (CEF) effects and anisotropic exchange [47,51,52] . The excellent de Gennes scaling in RE Si 3 may point towards a negligible impact of these latter contributions.…”

Section: Magnetic Susceptibilitymentioning

confidence: 99%

Crystal Structure and Magnetic Properties of High‐Pressure Phases RESi₃ (RE=Tb, Dy, Er, Tm)

Neziraj,

Akselrud,

Wirth

et al. 2023

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

The new metastable binary rare‐earth metal trisilicides RESi3 (RE = Tb, Dy, Er, and Tm) are obtained by high‐pressure high‐temperature synthesis (9.5 GPa, 823‐923 K). Powder diffraction data refinements reveal that their crystal structure is isotypic to that of YbSi3, and the values of cell parameters and cell volumes decrease from Tb to Tm. Magnetic measurements on the compounds indicate Curie‐Weiss paramagnetic behavior and antiferromagnetic ordering at low temperatures. The values for TN follow a de Gennes scaling indicating coupling of the magnetic moments via conduction electrons. Upon heating at ambient pressure, the RESi3 compounds decompose into Si and RESi2‐x.

show abstract

“…Currently, the mainstream atomic transport methods are primarily divided into two categories: magnetic field [9][10][11] and optical traps. [12][13][14] Magnetic transport typically relies on the translation of the trap minimum either by mechanically moving a single pair of coils [9,15] or dynamically controlling the current in coils. Nevertheless, optical transport methods are more widely used.…”

Section: Introductionmentioning

confidence: 99%

Atomic transport dynamics in crossed optical dipole trap

Peng 彭,

Zhang 张,

Fan 樊

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

We study the dynamical evolution of cold atoms in crossed optical dipole trap theoretically and experimentally. The atomic transport process is accompanied by two competitive kinds of physical mechanics, atomic loading and atomic loss. The loading process normally is negligible in the evaporative cooling experiment on the ground, while it is significant in the preparation of ultra-cold atoms in the space station. Normally, the atomic loading process is much weaker than the atomic loss process, and the atomic number in the center region of the trap decreases monotonically, as reported in previous research. However, when the atomic loading process is comparable to the atomic loss process, the atomic number in the center region of the trap will initially increase to a maximum value and then slowly decrease, and we have observed the phenomenon first. The increase of atomic number in the center region of the trap shows the presence of the loading process, and this will be significant especially under microgravity conditions. We build a theoretical model to analyze the competitive relationship, which coincides with the experimental results well. Furthermore, we have also given the predicted evolutionary behaviors under different conditions. This research provides a solid foundation for further understanding of the atomic transport process in traps. The analysis of loading process is of significant importance for the preparation of ultra-cold atoms in a crossed optical dipole trap under microgravity conditions.

show abstract

Transporting cold atoms using an optically compensated zoom lens

Cited by 7 publications

References 45 publications

Design and simulation of a source of cold cadmium for atom interferometry

Design and simulation of a source of cold cadmium for atom interferometry

Crystal Structure and Magnetic Properties of High‐Pressure Phases RESi₃ (RE=Tb, Dy, Er, Tm)

Atomic transport dynamics in crossed optical dipole trap

Contact Info

Product

Resources

About

Transporting cold atoms using an optically compensated zoom lens

Cited by 7 publications

References 45 publications

Design and simulation of a source of cold cadmium for atom interferometry

Design and simulation of a source of cold cadmium for atom interferometry

Crystal Structure and Magnetic Properties of High‐Pressure Phases RESi3 (RE=Tb, Dy, Er, Tm)

Atomic transport dynamics in crossed optical dipole trap

Contact Info

Product

Resources

About

Crystal Structure and Magnetic Properties of High‐Pressure Phases RESi₃ (RE=Tb, Dy, Er, Tm)