Trapping ultracold atoms in a time-averaged adiabatic potential

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.031402· OSTI ID:21408350

Gildemeister, M; Nugent, E; Sherlock, B E; Kubasik, M; Sheard, B T; Foot, C J ^[1]

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1. Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)

We report an experimental realization of ultracold atoms confined in a time-averaged, adiabatic potential (TAAP). This trapping technique involves using a slowly oscillating ({approx}kHz) bias field to time-average the instantaneous potential given by dressing a bare magnetic potential with a high-frequency ({approx}MHz) magnetic field. The resultant potentials provide a convenient route to a variety of trapping geometries with tunable parameters. We demonstrate the TAAP trap in a standard time-averaged orbiting potential trap with additional Helmholtz coils for the introduction of the radio frequency dressing field. We have evaporatively cooled 5x10{sup 4} atoms of {sup 87}Rb to quantum degeneracy and observed condensate lifetimes of longer than 3 s.

• OSTI ID: 21408350
• Journal Information: Physical Review. A, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevA.81.031402; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
CONDENSATES
GEOMETRY
KHZ RANGE
LIFETIME
MAGNETIC FIELDS
MHZ RANGE
POTENTIALS
RADIOWAVE RADIATION
RUBIDIUM 87
TRAPPING
TRAPS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
ELECTROMAGNETIC RADIATION
FREQUENCY RANGE
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICS
NUCLEI
ODD-EVEN NUCLEI
RADIATIONS
RADIOISOTOPES
RUBIDIUM ISOTOPES
YEARS LIVING RADIOISOTOPES