Abstract
We report simultaneous conjugate Ramsey-Bordé interferometers with a sample of low-mass (lithium-7) atoms at 50 times the recoil temperature. We optically pump the atoms to a magnetically insensitive state using the line. Fast stimulated Raman beam splitters address a broad velocity class and unavoidably drive two conjugate interferometers that overlap spatially. We show that detecting the summed interference signals of both interferometers, using state labeling, allows recoil measurements and suppression of phase noise from vibrations. The use of “warm” atoms allows for simple, efficient, and high-flux atom sources and broadens the applicability of recoil-sensitive interferometry to particles that remain difficult to trap and cool.
- Received 26 October 2016
DOI:https://doi.org/10.1103/PhysRevLett.118.233201
© 2017 American Physical Society
Physics Subject Headings (PhySH)
Focus
Interferometer for Lighter Atoms
Published 9 June 2017
A new atom interferometer works at less extreme temperatures and with lighter atoms than previous designs, opening up a new route to precision measurements of fundamental constants.
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