Bi-color atomic beam slower and magnetic field compensation for ultracold gases
ZANON-WILLETTE, Thomas
COMUE Université Côte d'Azur (2015-2019) [COMUE UCA]
Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
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COMUE Université Côte d'Azur (2015-2019) [COMUE UCA]
Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA]
Language
en
Article de revue
This item was published in
AVS Quantum Science. 2022, vol. 4
English Abstract
Transversely loaded bidimensional-magneto-optical-traps (2D-MOTs) have been recently developed as high flux sources for cold strontium atoms to realize a new generation of compact experimental setups. Here, we discuss on ...Read more >
Transversely loaded bidimensional-magneto-optical-traps (2D-MOTs) have been recently developed as high flux sources for cold strontium atoms to realize a new generation of compact experimental setups. Here, we discuss on the implementation of a cross-polarized bi-color slower for a strontium atomic beam, improving the 2D-MOT loading and increasing the number of atoms up to ~ 10 9 atoms in the 461 nm MOT. Our slowing scheme addresses simultaneously two excited Zeeman substates of the <SUP>88</SUP>Sr <SUP>1</SUP> S 0 → 1P<SUB>1</SUB> transition at 461 nm. We also realized a three-axis active feedback control of the magnetic field down to the microgauss regime. Such a compensation is performed thanks to a network of eight magnetic field probes arranged in a cuboid configuration around the atomic cold sample and a pair of coils in a quasi-Helmholtz configuration along each of three Cartesian directions. Our active feedback is capable of efficiently suppressing most of the magnetically induced position fluctuations of the 689 nm intercombination-line MOT.Read less <
English Keywords
Physics - Atomic Physics
Condensed Matter - Quantum Gases
Origin
Hal imported