Polarization entangled photons from quantum dots embedded in nanowires

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DOIResolve DOI: http://doi.org/10.1021/nl503581d
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TypeArticle
Journal titleNano Letters
ISSN1530-6984
Volume14
Issue12
Pages71077114; # of pages: 8
SubjectAvalanche diodes; Light; Nanowires; Polarization; Quantum optics; Semiconductor quantum dots; Single mode fibers; Biexcitons; Detector efficiency; Extraction efficiencies; High collection efficiency; Maximally entangled state; Novel structures; Polarization entanglement; Polarization-entangled photons; Quantum entanglement
AbstractIn this Letter, we present entanglement generated from a novel structure: a single InAsP quantum dot embedded in an InP nanowire. These structures can grow in a site-controlled way and exhibit high collection efficiency; we detect 0.5 million biexciton counts per second coupled into a single mode fiber with a standard commercial avalanche photo diode. If we correct for the known setup losses and detector efficiency, we get an extraction efficiency of 15(3) %. For the measured polarization entanglement, we observe a fidelity of 0.76(2) to a reference maximally entangled state as well as a concurrence of 0.57(6).
Publication date
PublisherACS Publications
LanguageEnglish
AffiliationNational Research Council Canada; Information and Communication Technologies
Peer reviewedYes
NPARC number21275596
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Record identifier58c9a609-e3bb-4e35-adad-38b91b86d82d
Record created2015-07-14
Record modified2016-05-09
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