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On-chip single photon filtering and multiplexing in hybrid quantum photonic circuits
KTH, School of Electrical Engineering (EES).ORCID iD: 0000-0002-7004-9665
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2017 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 8, article id 379Article in journal (Refereed) Published
Abstract [en]

Quantum light plays a pivotal role in modern science and future photonic applications. Since the advent of integrated quantum nanophotonics different material platforms based on III-V nanostructures-, colour centers-, and nonlinear waveguides as on-chip light sources have been investigated. Each platform has unique advantages and limitations; however, all implementations face major challenges with filtering of individual quantum states, scalable integration, deterministic multiplexing of selected quantum emitters, and on-chip excitation suppression. Here we overcome all of these challenges with a hybrid and scalable approach, where single III-V quantum emitters are positioned and deterministically integrated in a complementary metal-oxide-semiconductor-compatible photonic circuit. We demonstrate reconfigurable on-chip single-photon filtering and wavelength division multiplexing with a foot print one million times smaller than similar table-top approaches, while offering excitation suppression of more than 95 dB and efficient routing of single photons over a bandwidth of 40 nm. Our work marks an important step to harvest quantum optical technologies' full potential.

Place, publisher, year, edition, pages
Nature Publishing Group, 2017. Vol. 8, article id 379
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Other Physics Topics Atom and Molecular Physics and Optics
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URN: urn:nbn:se:kth:diva-214498DOI: 10.1038/s41467-017-00486-8ISI: 000408694700001Scopus ID: 2-s2.0-85028556311OAI: oai:DiVA.org:kth-214498DiVA, id: diva2:1147915
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QC 20171009

Available from: 2017-10-09 Created: 2017-10-09 Last updated: 2017-11-29Bibliographically approved

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Elshaari, Ali W.Zwiller, ValJöns, Klaus D.

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