Composite-fringe atom interferometry for high dynamic-range sensing
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.
Cite
@article{arxiv.1912.12304,
title = {Composite-fringe atom interferometry for high dynamic-range sensing},
author = {Chen Avinadav and Dimitry Yankelev and Ofer Firstenberg and Nir Davidson},
journal= {arXiv preprint arXiv:1912.12304},
year = {2020}
}
Comments
C.A. and D.Y. contributed equally. The text consists of 6+3 pages, 5 figures