期刊
JOURNAL OF APPLIED PHYSICS
卷 108, 期 9, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3506685
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资金
- DARPA, DOD
- DARPA, ONR
- DARPA, U.S. Department of the Army [W911NF-04-1-0032]
- Draper Laboratory
We demonstrate a macroscopic magnetic guide for cold atom interferometry, where the magnetic guiding field is generated by a symmetrical array of racetrack coils of copper tape. This system represents a conceptual advance over previous guided atom interferometers based on nonsymmetrical geometries because the symmetry provides a much lower magnetic field curvature per fixed length than equivalent nonsymmetrical geometries, permitting a decrease in system length without increasing the decoherence rate associated with field curvature. We realized a magnetic guide a few cm away from each coil, where smooth translation of the guided atoms is achieved by changing the currents in second array of the multiple-conductor tape. (c) 2010 American Institute of Physics. [doi:10.1063/1.3506685]
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