Shot-noise-limited spin measurements in a pulsed molecular beam
Creators
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1.
Universität Innsbruck
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2.
University of California, Los Angeles
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3.
Harvard University
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4.
Yale University
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5.
York University
Abstract
Heavy diatomic molecules have been identified as good candidates for use in electron electric dipole moment (eEDM) searches. Suitable molecular species can be produced in pulsed beams, but with a total flux and/or temporal evolution that varies significantly from pulse to pulse. These variations can degrade the experimental sensitivity to changes in the spin precession phase of an electrically polarized state, which is the observable of interest for an eEDM measurement. We present two methods for measurement of the phase that provide immunity to beam temporal variations, and make it possible to reach shot-noise-limited sensitivity. Each method employs rapid projection of the spin state onto both components of an orthonormal basis. We demonstrate both methods using the eEDM-sensitive H^3Δ^1 state of thorium monoxide, and use one of them to measure the magnetic moment of this state with increased accuracy relative to previous determinations.
Additional Information
© 2013 American Physical Society. Received 27 May 2013; published 26 July 2013. This work was supported by the NSF.Attached Files
Published - PhysRevA.88.013844-1.pdf
Submitted - 1305.2179-1.pdf
Files
1305.2179-1.pdf
Additional details
Identifiers
- Eprint ID
- 81025
- Resolver ID
- CaltechAUTHORS:20170831-133056164
Related works
- Describes
- https://arxiv.org/abs/1305.2179 (URL)
Funding
- NSF
Dates
- Created
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2017-09-05Created from EPrint's datestamp field
- Updated
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2023-03-16Created from EPrint's last_modified field