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Main Title: A stand-alone fiber-coupled single-photon source
Author(s): Schlehahn, Alexander
Fischbach, Sarah
Schmidt, Ronny
Kaganskiy, Arsenty
Strittmatter, André
Rodt, Sven
Heindel, Tobias
Reitzenstein, Stephan
Type: Article
Abstract: In this work, we present a stand-alone and fiber-coupled quantum-light source. The plug-and-play device is based on an optically driven quantum dot delivering single photons via an optical fiber. The quantum dot is deterministically integrated in a monolithic microlens which is precisely coupled to the core of an optical fiber via active optical alignment and epoxide adhesive bonding. The rigidly coupled fiber-emitter assembly is integrated in a compact Stirling cryocooler with a base temperature of 35 K. We benchmark our practical quantum device via photon auto-correlation measurements revealing g(2)(0) = 0.07 ± 0.05 under continuous-wave excitation and we demonstrate triggered non-classical light at a repetition rate of 80 MHz. The long-term stability of our quantum light source is evaluated by endurance tests showing that the fiber-coupled quantum dot emission is stable within 4% over several successive cool-down/warm-up cycles. Additionally, we demonstrate non-classical photon emission for a user-intervention-free 100-hour test run and stable single-photon count rates up to 11.7 kHz with a standard deviation of 4%.
Subject(s): quantum dots
quantum effects
quantum-light source
single-photon source
Issue Date: 22-Jan-2018
Date Available: 11-May-2020
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
EC/FP7/615613/EU/External Quantum Control of Photonic Semiconductor Nanostructures/EXQUISITE
Journal Title: Scientific Reports
Publisher: Springer Nature
Volume: 8
Article Number: 1340
Publisher DOI: 10.1038/s41598-017-19049-4
EISSN: 2045-2322
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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