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arXiv · 1912.12304

Composite-fringe atom interferometry for high dynamic-range sensing

Chen Avinadav·Dimitry Yankelev·Ofer Firstenberg·Nir Davidson
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Abstract

Atom interferometers offer excellent sensitivity to gravitational and inertial signals but have limited dynamic range. We introduce a scheme that improves on this trade-off by a factor of 50 using composite fringes, obtained from sets of measurements with slightly varying interrogation times. We analyze analytically the performance gain in this approach and the trade-offs it entails between sensitivity, dynamic range, and temporal bandwidth, and we experimentally validate the analysis over a wide range of parameters. By combining composite-fringe measurements with a particle-filter estimation protocol, we demonstrate continuous tracking of a rapidly varying signal over a span two orders of magnitude larger than the dynamic range of a traditional atom interferometer.

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Chen Avinadav, Dimitry Yankelev, Ofer Firstenberg, Nir Davidson. 2019-12-27. Composite-fringe atom interferometry for high dynamic-range sensing. https://doi.org/10.1103/physrevapplied.13.054053

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