Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session S28: Quantum Measurement and Sensing III
11:15 AM–2:03 PM,
Thursday, March 7, 2019
BCEC
Room: 161
Sponsoring
Unit:
DQI
Chair: Lucas Sletten, University of Colorado, Boulder
Abstract: S28.00006 : Optimal Estimation of Complex Squeezing in Phase Space*
12:15 PM–12:27 PM
Presenter:
Jasminder Sidhu
(University of Sheffield)
Authors:
Jasminder Sidhu
(University of Sheffield)
Pieter Kok
(University of Sheffield)
We apply quantum estimation theory to optimally characterise the squeezing parameter ξ. Previous works have been limited to estimates of its magnitude r. However, a complete understanding also requires knowledge of its direction θ. We derive the fundamental precision bounds for both parameters for general Gaussian states. We find that saturating these bounds through simultaneous measurements are prohibited, even asymptotically. Despite this, we show how correlated intensity measurements saturate the individual precision bounds for complete characterisation of squeezed light sources.
[1] - S. L. Braunstein et. al., Rev. Mod. Phys., 77(2), 2005.
[2] - J. Aasi et. al., Nat. Phot., 7, 2013.
*DSTL Quantum 2.0 Technologies Programme.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700