Trapping ultracold atoms in a time-averaged adiabatic potential

2009/12/17 by M. Gildemeister, E. Nugent, Benjamin E. Sherlock +5 · 31 citations
Physics and Astronomy · #Adiabatic process #Advanced Frequency and Time Standards #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Degeneracy (biology) #Field (mathematics) #Magnetic field #Magnetic trap #Physics #Quantum #Quantum Mechanics and Applications #Quantum mechanics #Realization (probability) #Trap (plumbing) #Trapping #Ultracold atom #cond-mat.quant-gas

paper · pdf · doi:10.1103/physreva.81.031402

published in Physical Review A 81(3) (American Physical Society) · 4 pages, 6 figures

arxiv created 2009/12/17 · openalex publication_date 2010/03/22 · arxiv updated 2011/10/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We report an experimental realization of ultracold atoms confined in a time-averaged, adiabatic potential (TAAP). This trapping technique involves using a slowly oscillating (~kHz) bias field to time-average the instantaneous potential given by dressing a bare magnetic potential with a high-frequency (~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 5\ifmmode×\else\texttimes\fi10⁴ atoms of ⁸⁷Rb to quantum degeneracy and observed condensate lifetimes of longer than 3 s.

Citations

• Bose-Einstein Condensation in a Circular Waveguide
• Evidence of Bose-Einstein Condensation in an Atomic Gas with Attractive Interactions
• Observation of Long-Lived Vortex Aggregates in Rapidly Rotating Bose-Einstein Condensates
• Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor
• Experimental demonstration of painting arbitrary and dynamic potentials for Bose–Einstein condensates
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Vortex Nucleation in Bose-Einstein Condensates in an Oblate, Purely Magnetic Potential
• Ultracold atoms in radio-frequency dressed potentials beyond the rotating-wave approximation
• Optimizing number squeezing when splitting a mesoscopic condensate
• Emergence of a molecular Bose–Einstein condensate from a Fermi gas
• Smooth inductively coupled ring trap for atoms
• Laser phase and frequency stabilization using an optical resonator
• Double-well magnetic trap for Bose-Einstein condensates
• Quantum Phases of Vortices in Rotating Bose-Einstein Condensates
• Large magnetic storage ring for Bose-Einstein condensates
• Vortex Formation in a Stirred Bose-Einstein Condensate