Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published July 26, 2013 | Published + Submitted
Journal Article Open

Shot-noise-limited spin measurements in a pulsed molecular beam

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

PhysRevA.88.013844-1.pdf
Files (1.7 MB)
Name Size Download all
md5:2c74b3fc11b88d2b8b5952447f5ec83a
768.9 kB Preview Download
md5:090310aa214276f048f77898e91d1304
900.7 kB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 17, 2023