期刊
NANO LETTERS
卷 20, 期 9, 页码 6357-6363出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c01771
关键词
quantum dot; single-photon source; integrated photonics; ring resonator; Purcell two-photon interference
类别
资金
- Alexander von Humboldt Foundation
- National Research Foundation of Korea through the Korean Government [NRF-2019R1A2C4069587]
- State of Bavaria
- National Research Foundation of Korea [22A20151113438] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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.
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