| Issue |
EPL
Volume 81, Number 4, February 2008
|
|
|---|---|---|
| Article Number | 44001 | |
| Number of page(s) | 5 | |
| Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/81/44001 | |
| Published online | 18 January 2008 | |
Quantum limits in image processing
1
Laboratoire Kastler Brossel, Université Pierre et Marie Curie-Paris 6, École Normale Supérieure, CNRS, CC74 4 Place Jussieu, 75252 Paris cedex 05, France
2
ARC Centre of Excellence for Quantum-Atom Optics, Australian National University Canberra, ACT 0200, Australia
3
Physics and Image processing group, Fresnel Institute, UMR 6133, Domaine Universitaire de Saint-Jérôme 13397 Marseille cedex 20, France
Received:
26
October
2007
Accepted:
7
December
2007
We determine the limit to the maximum achievable sensitivity in the estimation of a scalar parameter from the information contained in an optical image in the presence of quantum noise. This limit, based on the Cramer-Rao bound and valid for any image processing protocol, is calculated for a shot noise limited image, for a locally squeezed light, and for a single-mode squeezed light in a well-defined “noise mode". In addition, we exhibit an image processing protocol that allows us to reach the limits in the different cases.
PACS: 42.50.Dv – Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements / 42.30.-d – Imaging and optical processing / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.