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Main Title: Quantum metrology of solid-state single-photon sources using photon-number-resolving detectors
Author(s): Helversen, Martin von
Böhm, Jonas
Schmidt, Marco
Gschrey, Manuel
Schulze, Jan-Hindrik
Strittmatter, André
Rodt, Sven
Beyer, Jörn
Heindel, Tobias
Reitzenstein, Stephan
Type: Article
Abstract: Quantum-light sources based on semiconductor quantum dots (QDs) are promising candidates for many applications in quantum photonics and quantum communication. Important emission characteristics of such emitters, namely the single-photon purity and photon indistinguishability, are usually assessed via time-correlated measurements using standard 'click' detectors in Hanbury Brown and Twiss or Hong-Ou-Mandel (HOM-) type configurations. In this work, we employ a state-of-the-art photon-number-resolving (PNR) detection system based on superconducting transition-edge sensors (TESs) to directly access the photon-number distribution of deterministically fabricated solid-state single-photon sources. Offering quantum efficiencies close to unity and high energy resolution, our TES-based two-channel detector system allows us to analyse the quantum optical properties of a QD-based non-classical light source. In particular, it enables the direct observation of the two-particle Fock-state resulting from interference of quantum mechanically indistinguishable photons in HOM-experiments. Additionally, comparative measurements reveal excellent quantitative agreement of the photon-indistinguishabilities obtained with PNR ((90 ± 7)%) and standard click ((90 ± 5)%) detectors. Our work thus demonstrates that TES-based detectors are perfectly suitable for the quantum metrology of non-classical light sources and higlights appealing prospects for the efficient implementation of quantum information tasks based on multi-photon states.
Subject(s): quantum metrology
single-photon sources
photon-number-resolving detectors
transition-edge sensors
qantum dots
Issue Date: 28-Mar-2019
Date Available: 8-Jan-2021
Language Code: en
DDC Class: 530 Physik
Sponsor/Funder: DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, Bauelemente
BMBF, 03V0630, Entwicklung einer Halbleiterbasierten Einzelphotonenquelle für die Quanteninformationstechnologie
BMBF, 13N14876, Quantenkommunikations-Systeme auf Basis von Einzelphotonenquellen (QuSecure)
Journal Title: New Journal of Physics
Publisher: IOP
Volume: 21
Article Number: 035007
Publisher DOI: 10.1088/1367-2630/ab0609
EISSN: 1367-2630
TU Affiliation(s): Fak. 2 Mathematik und Naturwissenschaften » Inst. Festkörperphysik » AG Optoelektronik und Quantenbauelemente
Appears in Collections:Technische Universität Berlin » Publications

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