The quantum laser pointer and other applications of squeezed light
Date
2004
Authors
Bachor, Hans
Bowen, Warwick P
Grosse, Nicolai
Buchler, Benjamin
Andersen, U
Schnabel, R
Lam, Ping Koy
Treps, Nicolas
Fabre, Claude
Maitre, A
Journal Title
Journal ISSN
Volume Title
Publisher
SPIE - The International Society for Optical Engineering
Abstract
The quantum nature of light imposes a limit to the detection of all properties of a laser beam. We show how we can reduce this limit for a measurement of the position of a light beam on a quadrant detector, simultaneously in two transverse directions. This quantum laser pointer can measure the beam direction with greater precision than a usual laser. We achieve this by combining three beams, one intense coherent and two vacuum squeezed beams, with minimum losses into one spatially multimode beam optimized for this application.
Description
Keywords
Keywords: Correlation methods; Gaussian noise (electronic); Imaging systems; Light polarization; Multimode fibers; Photodetectors; Photodiodes; Quantum theory; Refractive index; Vacuum; Quantum imaging; Quantum light of spatial detection; Squeezed light; Laser beam Quantum imaging; Quantum limit of spatial detection; Squeezed light
Citation
Collections
Source
Proceedings of the SPIE: Quantum Communications and Quantum Imaging. Volume 5161
Type
Conference paper