A Caltech Library Service

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

Kirilov, E. and Campbell, W. C. and Doyle, J. M. and Gabrielse, G. and Gurevich, Y. V. and Hess, P. W. and Hutzler, N. R. and O’Leary, B. R. and Petrik, E. and Spaun, B. and Vutha, A. C. and DeMille, D. (2013) Shot-noise-limited spin measurements in a pulsed molecular beam. Physical Review A, 88 (1). Art. No. 013844. ISSN 1050-2947. doi:10.1103/PhysRevA.88.013844.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Hess, P. W.0000-0003-2985-4221
Hutzler, N. R.0000-0002-5203-3635
Additional Information:© 2013 American Physical Society. Received 27 May 2013; published 26 July 2013. This work was supported by the NSF.
Funding AgencyGrant Number
Issue or Number:1
Classification Code:PACS number(s): 37.20.+j, 11.30.Er
Record Number:CaltechAUTHORS:20170831-133056164
Persistent URL:
Official Citation:Shot-noise-limited spin measurements in a pulsed molecular beam E. Kirilov, W. C. Campbell, J. M. Doyle, G. Gabrielse, Y. V. Gurevich, P. W. Hess, N. R. Hutzler, B. R. O’Leary, E. Petrik, B. Spaun, A. C. Vutha, and D. DeMille Phys. Rev. A 88, 013844 – Published 26 July 2013
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:81025
Deposited By: Ruth Sustaita
Deposited On:05 Sep 2017 17:49
Last Modified:15 Nov 2021 19:40

Repository Staff Only: item control page