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dc.contributor.authorKreinberg, Sören
dc.contributor.authorGrbesić, Tomislav
dc.contributor.authorStrauß, Max
dc.contributor.authorCarmele, Alexander
dc.contributor.authorEmmerling, Monika
dc.contributor.authorSchneider, Christian
dc.contributor.authorHöfling, Sven
dc.contributor.authorPorte, Xavier
dc.contributor.authorReitzenstein, Stephan
dc.identifier.citationKreinberg , S , Grbesić , T , Strauß , M , Carmele , A , Emmerling , M , Schneider , C , Höfling , S , Porte , X & Reitzenstein , S 2018 , ' Quantum-optical spectroscopy of a two-level system using an electrically driven micropillar laser as resonant excitation source ' , Light: Science & Applications , vol. 7 , 41 .
dc.identifier.otherPURE: 253147312
dc.identifier.otherPURE UUID: 1d3e3368-d2d4-4a40-b3c2-4d6fd5c5e801
dc.identifier.otherScopus: 85050632326
dc.identifier.otherWOS: 000440510500005
dc.description.abstractTwo-level emitters are the main building blocks of photonic quantum technologies and are model systems for the exploration of quantum optics in the solid state. Most interesting is the strict resonant excitation of such emitters to control their occupation coherently and to generate close to ideal quantum light, which is of utmost importance for applications in photonic quantum technology. To date, the approaches and experiments in this field have been performed exclusively using bulky lasers, which hinders the application of resonantly driven two-level emitters in compact photonic quantum systems. Here we address this issue and present a concept for a compact resonantly driven single-photon source by performing quantum-optical spectroscopy of a two-level system using a compact high-β microlaser as the excitation source. The two-level system is based on a semiconductor quantum dot (QD), which is excited resonantly by a fiber-coupled electrically driven micropillar laser. We dress the excitonic state of the QD under continuous wave excitation, and trigger the emission of single photons with strong multi-photon suppression (g(2)(0)=0.02) and high photon indistinguishability (V = 57±9%) via pulsed resonant excitation at 156 MHz. These results clearly demonstrate the high potential of our resonant excitation scheme, which can pave the way for compact electrically driven quantum light sources with excellent quantum properties to enable the implementation of advanced quantum communication protocols.
dc.relation.ispartofLight: Science & Applicationsen
dc.rights© The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to theCreative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
dc.subjectQuantum doten
dc.subjectQuantum light sourceen
dc.subjectResonance fluorescenceen
dc.subjectMollow tripleten
dc.subjectCavity quantum electrodynamicsen
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleQuantum-optical spectroscopy of a two-level system using an electrically driven micropillar laser as resonant excitation sourceen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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