A Microchip Ring Trap for Cold Atoms
Abstract
We describe a method to create a circular magnetic waveguide for deBroglie waves on a microchip. The guide is a two-dimensional magnetic minimum for trapping weak-field seeking states of atoms or molecules with a magnetic dipole moment. It is created completely by electric currents in wires that are lithographically patterned on a multi-level chip. We describe the geometry and time-dependent currents of the wires and show that it is possible to wrap the waveguide in a complete circle with minimal perturbations due to the leads or wire crossings. This maximal area geometry is suited for rotation sensing with atom interferometry via the Sagnac effect using either cold thermal atoms and molecules or Bose-condensed systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 05, 2005
- Accession Number
- ADA440211
Entities
People
- M. B. Crookston
- M. P. Robinson
- P. M. Baker
Organizations
- Air Force Research Laboratory