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Main Title: A bright triggered twin-photon source in the solid state
Author(s): Heindel, Tobias
Thoma, Alexander
Helversen, Martin von
Schmidt, Marco
Schlehahn, Alexander
Gschrey, Manuel
Schnauber, Peter
Schulze, Jan-Hindrik
Strittmatter, André
Beyer, Jörn
Rodt, Sven
Carmele, Alexander
Knorr, Andreas
Reitzenstein, Stephan
Type: Article
Abstract: A non-classical light source emitting pairs of identical photons represents a versatile resource of interdisciplinary importance with applications in quantum optics and quantum biology. To date, photon twins have mostly been generated using parametric downconversion sources, relying on Poissonian number distributions, or atoms, exhibiting low emission rates. Here we propose and experimentally demonstrate the efficient, triggered generation of photon twins using the energy-degenerate biexciton–exciton radiative cascade of a single semiconductor quantum dot. Deterministically integrated within a microlens, this nanostructure emits highly correlated photon pairs, degenerate in energy and polarization, at a rate of up to (234±4) kHz. Furthermore, we verify a significant degree of photon indistinguishability and directly observe twin-photon emission by employing photon-number-resolving detectors, which enables the reconstruction of the emitted photon number distribution. Our work represents an important step towards the realization of efficient sources of twin-photon states on a fully scalable technology platform.
Subject(s): quantum dots
quantum optics
single photons and quantum effects
Issue Date: 3-Apr-2017
Date Available: 13-Jan-2021
Language Code: en
DDC Class: 530 Physik
Sponsor/Funder: BMBF, 03V0630, Entwicklung einer Halbleiterbasierten Einzelphotonenquelle für die Quanteninformationstechnologie
Journal Title: Nature Communications
Publisher: Springer Nature
Volume: 8
Article Number: 14870
Publisher DOI: 10.1038/ncomms14870
EISSN: 2041-1723
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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