Squeezing on Momentum States for Atom Interferometry
Name
PhysRevLett.120.033601.pdf
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496.89 KB
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Author(s)
Salvi, Leonardo
Poli, Nicola
Tino, Guglielmo M.
Vuletic, Vladan
Date Issued
January 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Salvi, Leonardo, et al. “Squeezing on Momentum States for Atom Interferometry.” Physical Review Letters, vol. 120, no. 3, Jan. 2018. © 2018 American Physical Society
Version
Final published version
Abstract
We propose and analyze a method that allows for the production of squeezed states of the atomic center-of-mass motion that can be injected into an atom interferometer. Our scheme employs dispersive probing in a ring resonator on a narrow transition in order to provide a collective measurement of the relative population of two momentum states. We show that this method is applicable to a Bragg diffraction-based strontium atom interferometer with large diffraction orders. This technique can be extended also to small diffraction orders and large atom numbers N by inducing atomic transparency at the frequency of the probe field, reaching an interferometer phase resolution scaling Δϕ∼N[superscript -3/4]. We show that for realistic parameters it is possible to obtain a 20 dB gain in interferometer phase estimation compared to the standard quantum limit. Our method is applicable to other atomic species where a narrow transition is available or can be synthesized.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.120.033601
