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US 6,548,809 B2Granted
Electromagnetic device for production of cold neutral atoms
AssigneeEtat Francais Represente par Letdelegue General pour l'Armement
InventorsPhilippe Bouyer, Alain Aspect, Michel Lecrivain, Bruno Desruelle, Vincent Boyer
Life of this patent
Estimating the term…
Abstract
An electromagnetic device for producing cold neutral atoms having a ferromagnetic structure with four poles disposed in the same plane XOY excited by main coils (the quadrupole) supplying the main excitation, and two additional poles (the dipole) oriented along an axis Z and perpendicular to the plane of said four poles, the poles being magnetically coupled by one or more yokes.
Claims10
An electromagnetic device for producing cold neutral atoms comprising:
- a ferromagnetic structure with four poles disposed in a same plane XOY excited by main coils supplying a main excitation;
- and
- two additional poles oriented along an axis Z and perpendicular to the plane of said four poles, the poles being magnetically coupled by one or more yokes, wherein the additional poles are comprised of an external structure and an internal structure excited separately by two coils traversed by opposing currents.
Dependencies are inferred from the claim text.