Dynamically controlled toroidal and ring-shaped magnetic traps

2005/12/31 by T. Fernholz, R. Gerritsma, P. Krüger +2 · 3 citations
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #physics.atom-ph

paper · pdf · doi:10.1103/physreva.75.063406

published as Phys. Rev. A 75, 063406 (2007) · 6 pages, 4 figures. Paragraphs on gravity compensation and expected trap lifetimes added

openalex publication_date 2007/06/06 · arxiv created 2007/06/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present traps with toroidal (T²) and ring-shaped topologies based on adiabatic potentials for radio-frequency-dressed Zeeman states in a ring-shaped magnetic quadrupole field. Simple adjustment of the radio-frequency fields provides versatile possibilities for dynamical parameter tuning, topology change, and controlled potential perturbation. We show how to induce toroidal and poloidal rotations, and demonstrate the feasibility of preparing degenerate quantum gases with reduced dimensionality and periodic boundary conditions. The great level of dynamical and even state-dependent control is useful for atom interferometry.

Citations

• Atom trapping and two-dimensional Bose-Einstein condensates in field-induced adiabatic potentials
• Effect of magnetization inhomogeneity on magnetic microtraps for atoms
• The critical properties of the two-dimensional xy model
• Large magnetic storage ring for Bose-Einstein condensates
• Ordering, metastability and phase transitions in two-dimensional systems

Cited by

• Cold-atom confinement in an all-optical dark ring trap
• Reproducible dynamic dark ring lattices for ultracold atoms
• Roadmap on Atomtronics: State of the art and perspective