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Purcell-enhanced and indistinguishable single-photon generation from quantum dots coupled to on-chip integrated ring resonators

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Date
24/07/2020
Author
Dusanowski, Łukasz
Köck, Dominik
Shin, Eunso
Kwon, Soon-Hong
Schneider, Christian
Höfling, Sven
Keywords
Quantum dot
Single-photon source
Integrated photonics
Ring resonator
Purcell
Two-photon interference
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
NDAS
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Abstract
Integrated photonic circuits provide a versatile toolbox of functionalities for advanced quantum optics applications. Here, we demonstrate an essential component of such a system in the form of a Purcell-enhanced single-photon source based on a quantum dot coupled to a robust on-chip integrated resonator. For that, we develop GaAs monolithic ring cavities based on distributed Bragg reflector ridge waveguides. Under resonant excitation conditions, we observe an over 2-fold spontaneous emission rate enhancement using Purcell effect and gain a full coherent optical control of a QD-two-level system via Rabi oscillations. Furthermore, we demonstrate an on-demand single-photon generation with strongly suppressed multiphoton emission probability as low as 1% and two-photon interference with visibility up to 95%. This integrated single-photon source can be readily scaled up, promising a realistic pathway for scalable on-chip linear optical quantum simulation, quantum computation, and quantum networks.
Citation
Dusanowski , Ł , Köck , D , Shin , E , Kwon , S-H , Schneider , C & Höfling , S 2020 , ' Purcell-enhanced and indistinguishable single-photon generation from quantum dots coupled to on-chip integrated ring resonators ' , Nano Letters , vol. 20 , no. 9 , pp. 6357–6363 . https://doi.org/10.1021/acs.nanolett.0c01771
Publication
Nano Letters
Status
Peer reviewed
DOI
https://doi.org/10.1021/acs.nanolett.0c01771
ISSN
1530-6984
Type
Journal article
Rights
Copyright © 2020 American Chemical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1021/acs.nanolett.0c01771
Description
Funding: Ł.D.acknowledges the financial support from the Alexander von Humboldt Foundation. S.-H. K. acknowledges the financial support from the National Research Foundation of Korea through the Korean Government Grant NRF-2019R1A2C4069587. We are furthermore grateful for the support by the State of Bavaria.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/23621

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