A Bose-Einstein condensate interferometer with macroscopic arm separation
O. Garcia, B. Deissler, K. J. Hughes, J. M. Reeves, C.A. Sackett
TL;DR
This paper demonstrates a Bose-Einstein condensate interferometer with unprecedented arm separation and coherence time, advancing the capabilities of atom interferometry for precision measurements.
Contribution
It introduces a novel Bose-Einstein condensate interferometer with large arm separation and long coherence times using magnetic guiding and Bragg interactions.
Findings
Coherence times up to 44 ms achieved
Arm separation of 0.18 mm surpasses previous atom interferometers
Uses weak magnetic confinement and off-resonant laser beams
Abstract
A Michelson interferometer using Bose-Einstein condensates is demonstrated with coherence times of up to 44 ms and arm separations up to 0.18 mm. This arm separation is larger than that observed for any previous atom interferometer. The device uses atoms weakly confined in a magnetic guide and the atomic motion is controlled using Bragg interactions with an off-resonant standing wave laser beam.
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