PMID: 15245156Jul 13, 2004Paper

Identifying entanglement using quantum ghost interference and imaging

Physical Review Letters
Milena D'AngeloYanhua Shih

Abstract

We report a quantum interference and imaging experiment which allows identifying the entanglement in momentum and position variables of a two-photon system. The measurements show indeed that the uncertainties in the sum of momenta and in the difference of positions of the entangled two-photon satisfy both EPR inequalities Delta(k(1)+k(2))<min((Delta k(1),Delta k(2)) and Delta(x(1)-x(2))<min((Delta x(1),Delta x(2)). These two inequalities, together, represent a nonclassicality condition. Our measurements provide a direct way to distinguish between quantum entanglement and classical correlation in continuous variables for systems of pairs of photons.

References

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Citations

Aug 19, 2011·Nature Communications·H Y LengS N Zhu
Aug 9, 2012·Nature Communications·M P EdgarM J Padgett
Sep 26, 2015·Scientific Reports·Ondřej HaderkaMaria Bondani
May 20, 2016·Scientific Reports·Shuai DongJiangde Peng
Feb 2, 2017·Proceedings of the National Academy of Sciences of the United States of America·Armin HochrainerAnton Zeilinger
Dec 30, 2017·Physical Review Letters·Francesco V PepeMilena D'Angelo
Oct 2, 2009·Physical Review Letters·B JackM J Padgett
Dec 31, 2016·Physical Review Letters·Jong-Chan LeeYoon-Ho Kim
Mar 1, 2018·Optics Letters·Ali AnwarR P Singh
Apr 13, 2019·Physical Review Letters·Tian-Ming ZhaoYoon-Ho Kim
Mar 17, 2019·Optics Express·Dong-Gil ImYoon-Ho Kim
Jun 14, 2006·Optics Letters·Graciana PuentesJ P Woerdman
Dec 11, 2013·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Shuyun TengWei Zhang
Jul 19, 2020·Optics Express·Xiao ZhangPing Xue
Apr 13, 2019·Physical Review Letters·Xiaodong QiuLixiang Chen
Mar 16, 2016·Optics Letters·Omar Calderón-LosadaAlejandra Valencia
Mar 24, 2005·Physical Review Letters·Alejandra ValenciaYanhua Shih
May 21, 2005·Physical Review Letters·F FerriL A Lugiato
Jun 10, 2018·Entropy·Fabricio ToscanoStephen P Walborn
Mar 4, 2014·Physical Review Letters·M Hor-MeyllS P Walborn
Aug 8, 2009·Physical Review Letters·R M GomesS P Walborn

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