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The quantum laser pointer and other applications of squeezed light

Bachor, Hans; Bowen, Warwick P; Grosse, Nicolai; Buchler, Benjamin; Andersen, U; Schnabel, R; Lam, Ping Koy; Treps, Nicolas; Fabre, Claude; Maitre, A


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...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Conference paper
Source: Proceedings of the SPIE: Quantum Communications and Quantum Imaging. Volume 5161


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