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Experimental demonstration of single photon rangefinding using parametric downconversion.
MedLine Citation:
PMID:  20567354     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We exploit the coincidence properties of photon pairs created in spontaneous parametric fluorescence to perform a low light level rangefinding experiment. One photon of each pair is sent to the target, and the small fraction returned is delayed by the return trip time. This delay is measured using a multichannel coincidence counter with gate time down to 10 ns. With a few picowatts output power and a target return of 10(-4)we obtain 1-m resolution range estimates in a few seconds with low levels of background light. We discuss the potential of the technique for millimeter accuracy ranging (or surveying) in high ambient light levels.
Authors:
J G Rarity; P R Tapster; J G Walker; S Seward
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  29     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  1990 Jul 
Date Detail:
Created Date:  2010-06-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2939-43     Citation Subset:  -    
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