Miniaturized magnetic guide for neutral atoms

Citation
J. Fortagh et al., Miniaturized magnetic guide for neutral atoms, APP PHYS B, 70(5), 2000, pp. 701-708
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS B-LASERS AND OPTICS
ISSN journal
0946-2171 → ACNP
Volume
70
Issue
5
Year of publication
2000
Pages
701 - 708
Database
ISI
SICI code
0946-2171(200005)70:5<701:MMGFNA>2.0.ZU;2-U
Abstract
We describe the principle and realization of a miniaturized magnetic guide for neutral atoms. The magnetic guide in our experiment is formed by a micr ometer-sized current-carrying wire which is attached to a second, thick wir e. The conductors are electrically insulated from each other. The combined magnetic field of both conductors provides an approximately linear trapping potential which establishes a magnetic guide along the surface of the thin wire. The miniaturized waveguide is filled with rubidium atoms from a magn eto-optical trap (MOT) by first loading the atoms into a spherical magnetic quadrupole trap which is subsequently transformed into the linear potentia l of the waveguide. As thermal source for Rb atoms we use an alkali metal d ispenser which is located close to the center of the MOT. This novel method is compatible with ultrahigh vacuum conditions and we achieved lifetimes o f the magnetically trapped atoms up to 100 s.