Dynamically controlled toroidal and ring-shaped magnetic traps

Abstract

We present traps with toroidal $(T^2)$ 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.

arXiv comment6 pages, 4 figures. Paragraphs on gravity compensation and expected trap lifetimes added

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• Compact chip-scale guided cold atom gyrometers for inertial navigation: Enabling technologies and design study
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• Quantum simulation of non-trivial topology
• Sagnac interferometry with a single atomic clock
• Rotational Fluxons of Bose-Einstein Condensates in Coplanar Double-Ring Traps
• Low-dimensional quantum gases in curved geometries
• Dark dynamic acousto-optic ring lattices for ultracold atoms
• Heisenberg-limited Sagnac Interferometer with Multi-particle States
• Demonstration of an inductively coupled ring trap for cold atoms
• Reconfigurable self-sufficient traps for ultracold atoms based on a superconducting square
• Fully permanent magnet atom chip for Bose-Einstein condensation
• Macroscopic Quantum Tunneling Escape of Bose-Einstein Condensates
• "Magic" radio-frequency dressing for trapped atomic microwave clocks
• Coherent adiabatic transport of atoms in radio-frequency traps
• Magnetic confinement of neutral atoms based on patterned vortex distributions in superconducting disks and rings
• Microwave spectroscopy of radio-frequency dressed ${}^{87}$Rb
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• Inductively guided circuits for ultracold dressed atoms
• A toroidal trap for cold ${}^{87}Rb$ atoms using an rf-dressed quadrupole trap
• Realising a species-selective double well with multiple-radiofrequency-dressed potentials
• Phase space tomography of cold-atoms dynamics in a weakly corrugated potential
• Signatures of the BCS-BEC crossover in the yrast spectra of Fermi quantum rings
• RF dressed atoms beyond the linear Zeeman effect
• Inductive dressed ring traps for ultracold atoms
• Macroscopic quantum escape of Bose-Einstein condensates: Analysis of experimentally realizable quasi-one-dimensional traps
• Enhancing the sensitivity of rotation in a multi-atom Sagnac interferometer
• Dynamics of quantum vortices in a quasi-two-dimensional Bose-Einstein condensate with two "holes"
• The non-Abelian bosonic quantum ring
• Atom cooling with an atom-optical diode on a ring
• Inelastic collisions in radiofrequency-dressed mixtures of ultracold atoms
• A magnetic lens for cold atoms controlled by a rf field
• An effective scalar magnetic interaction for resonantly trapped atoms
• Controlling spin motion and interactions in a one-dimensional Bose gas
• Bose-Einstein condensation on axially-symmetric surfaces
• Stability analysis of a magnetic waveguide with self-generated offset field
• Controlling the dynamical scale factor in a trapped atom Sagnac Interferometer
• Quantum Control of Interacting Bosons in Periodic Optical Lattice
• Dimer problem on a spherical surface
• All-optical bubble trap for ultracold atoms in microgravity
• Geometric phase of an atom inside an adiabatic radio frequency potential
• Creating versatile atom traps by applying near resonant laser light in magnetic traps
• Geometric filtering effect in expanding Bose-Einstein condensate shells