Document Detail


Optical precursor of a single photon.
MedLine Citation:
PMID:  21770570     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We report the direct observation of optical precursors of heralded single photons with step- and square-modulated wave packets passing through cold atoms. Using electromagnetically induced transparency and the slow-light effect, we separate the single-photon precursor, which always travels at the speed of light in vacuum, from its delayed main wave packet. In the two-level superluminal medium, our result suggests that the causality holds for a single photon.
Authors:
Shanchao Zhang; J F Chen; Chang Liu; M M T Loy; G K L Wong; Shengwang Du
Publication Detail:
Type:  Journal Article     Date:  2011-06-16
Journal Detail:
Title:  Physical review letters     Volume:  106     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-07-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  243602     Citation Subset:  IM    
Affiliation:
Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
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