Adjustable microchip ring trap for cold atoms and molecules

Abstract

We describe the design and function of a circular magnetic waveguide produced from wires on a microchip for atom interferometry using deBroglie waves. The guide is a two-dimensional magnetic minimum for trapping weak-field seeking states of atoms or molecules with a magnetic dipole moment. The design consists of seven circular wires sharing a common radius. We describe the design, the time-dependent currents of the wires and show that it is possible to form a circular waveguide with adjustable height and gradient while minimizing perturbation resulting from leads or wire crossings. This maximal area geometry is suited for rotation sensing with atom interferometry via the Sagnac effect using either cold atoms, molecules and Bose-condensed systems.

References in corpus (12)

• Atom interferometry with Bose-Einstein condensates in a double-well potential
• An Atom Michelson Interferometer on a Chip Using a Bose-Einstein Condensate
• Bose-Einstein condensation in a circular waveguide
• Impact of the Casimir-Polder Potential and Johnson Noise on Bose-Einstein Condensate Stability near Surfaces
• A Beam Splitter for Guided Atoms on an Atom Chip
• A large magnetic storage ring for Bose-Einstein condensates
• Demonstration of a moving guide based atom interferometer for rotation sensing
• A Bose-Einstein condensate interferometer with macroscopic arm separation
• A Smooth, Inductively Coupled Ring Trap for Atoms
• Dispersion management using betatron resonances in an ultracold-atom storage ring
• Limitation of the modulation method to smooth wire guide roughness
• Collisional decoherence in trapped atom interferometers that use non-degenerate sources

Cited by in corpus (15)

• Roadmap on Atomtronics: State of the art and perspective
• Time-averaged adiabatic ring potential for ultracold atoms
• Fifteen Years of Cold Matter on the Atom Chip: Promise, Realizations, and Prospects
• Boson and fermion dynamics in quasi-one-dimensional flat band lattices
• Sagnac interferometry with a single atomic clock
• The Snake Instability of Ring Dark Solitons in Toroidally Trapped Bose-Einstein Condensates
• Quantum rings for beginners II: Bosons versus fermions
• Controllable Asymmetric Matter-wave Beam Splitter and Ring Potential on an Atom Chip
• Macroscopic magnetic guide for cold atoms
• Inductively guided circuits for ultracold dressed atoms
• Exact Soliton-like Solutions of the Radial Gross-Pitaevskii Equation
• Effect of trap anharmonicity on a free-oscillation atom interferometer
• Self-interference of a toroidal Bose-Einstein condensate
• Optically induced conical intersections in traps for ultracold atoms and molecules
• Generalized wave-packet model for studying coherence of matter-wave interferometers