Purcell-enhanced and indistinguishable single-photon generation from quantum dots coupled to on-chip integrated ring resonators
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
ISSN
1530-6984Type
Journal article
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.Collections
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