Quantum laser pointer and other applications of squeezed light

Hans-Albert Bachor; Warwick P. Bowen; Nicolai Grosse; Ben Buchler; Ulrik Andersen; Roman Schnabel; Ping Koy Lam; Nicolas Treps; Claude Fabre; Agnes Maitre

doi:10.1117/12.512328

3 February 2004 Quantum laser pointer and other applications of squeezed light

Hans-Albert Bachor, Warwick P. Bowen, Nicolai Grosse, Ben Buchler, Ulrik Andersen, Roman Schnabel, Ping Koy Lam, Nicolas Treps, Claude Fabre, Agnes Maitre

Author Affiliations +

Proceedings Volume 5161, Quantum Communications and Quantum Imaging; (2004) https://doi.org/10.1117/12.512328
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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 tranverse 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 squeeezed beams, with minimum losses into one spatially multimode beam optimized for this application.

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Hans-Albert Bachor, Warwick P. Bowen, Nicolai Grosse, Ben Buchler, Ulrik Andersen, Roman Schnabel, Ping Koy Lam, Nicolas Treps, Claude Fabre, and Agnes Maitre "Quantum laser pointer and other applications of squeezed light", Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); https://doi.org/10.1117/12.512328

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