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A quantum laser pointer.
MedLine Citation:
PMID:  12920292     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
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 result provides a demonstration of multichannel spatial squeezing, along with its application to the improvement of beam positioning sensitivity and, more generally, to imaging.
Authors:
Nicolas Treps; Nicolai Grosse; Warwick P Bowen; Claude Fabre; Hans-A Bachor; Ping Koy Lam
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  301     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2003 Aug 
Date Detail:
Created Date:  2003-08-15     Completed Date:  2003-09-08     Revised Date:  2007-03-19    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  940-3     Citation Subset:  -    
Affiliation:
Australian Research Council Centre of Excellence for Quantum-Atom Optics, the Australian National University, Canberra ACT 0200, Australia. nicolas.treps@spectro.jussieu.fr
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