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dc.contributor.authorHeinze, Dirk
dc.contributor.authorZrenner, Artur
dc.contributor.authorSchumacher, Stefan
dc.date.accessioned2017-06-27T17:31:42Z
dc.date.available2017-06-27T17:31:42Z
dc.date.issued2017-06-09
dc.identifier.citationPolarization-entangled twin photons from two-photon quantum-dot emission 2017, 95 (24) Physical Review Ben
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.doi10.1103/PhysRevB.95.245306
dc.identifier.urihttp://hdl.handle.net/10150/624438
dc.description.abstractSemiconductor quantum dots are promising sources for polarization-entangled photons. As an alternative to the usual cascaded biexciton-exciton emission, direct two-photon emission from the biexciton can be used. With a high-quality optical resonator tuned to half the biexciton energy, a large proportion of the photons can be steered into the two-photon emission channel. In this case the degree of polarization entanglement is inherently insensitive to the exciton fine-structure splitting. In the present work we analyze the biexciton emission with particular emphasis on the influence of coupling of the quantum-dot cavity system to its environment. Especially for a high-quality cavity, the coupling to the surrounding semiconductormaterial can open up additional phonon-assisted decay channels. Our analysis demonstrates that with the cavity tuned to half the biexciton energy, the potentially detrimental influence of the phonons on the polarization entanglement is strongly suppressed-high degrees of entanglement can still be achieved. We further discuss spectral properties and statistics of the emitted twin photons.
dc.description.sponsorshipDFG [TRR142, GRK1464]; BMBF through Q.com [16KIS0114]; Heisenberg programme of the DFGen
dc.language.isoenen
dc.publisherAMER PHYSICAL SOCen
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.95.245306en
dc.rights© 2017 American Physical Society.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titlePolarization-entangled twin photons from two-photon quantum-dot emissionen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Coll Opt Scien
dc.identifier.journalPhysical Review Ben
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-09-11T20:33:38Z
html.description.abstractSemiconductor quantum dots are promising sources for polarization-entangled photons. As an alternative to the usual cascaded biexciton-exciton emission, direct two-photon emission from the biexciton can be used. With a high-quality optical resonator tuned to half the biexciton energy, a large proportion of the photons can be steered into the two-photon emission channel. In this case the degree of polarization entanglement is inherently insensitive to the exciton fine-structure splitting. In the present work we analyze the biexciton emission with particular emphasis on the influence of coupling of the quantum-dot cavity system to its environment. Especially for a high-quality cavity, the coupling to the surrounding semiconductormaterial can open up additional phonon-assisted decay channels. Our analysis demonstrates that with the cavity tuned to half the biexciton energy, the potentially detrimental influence of the phonons on the polarization entanglement is strongly suppressed-high degrees of entanglement can still be achieved. We further discuss spectral properties and statistics of the emitted twin photons.


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