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A quantum laser pointer

Treps, N.; Grosse, Nicolai; Bowen, Warwick P.; Fabre, Claude; Bachor, Hans; Lam, Ping Koy


The measurement sensitivity of the pointing direction of a laser beam is ultimately limited by the quantum nature of light. To reduce this limit, we have experimentally produced a quantum laser pointer, a beam of light whose direction is measured with a precision greater than that possible for a usual laser beam. The laser pointer is generated by combining three different beams in three orthogonal transverse modes, two of them in a squeezed-vacuum state and one in an intense coherent field. The...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Science
DOI: 10.1126/science.1086489


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