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Lifetimes and Quantum Efficiencies of Quantum Dots Deterministically Positioned in Photonic‐Crystal Waveguides
Author(s) -
Chu XiaoLiu,
Pregnolato Tommaso,
Schott Rüdiger,
Wieck Andreas D.,
Ludwig Arne,
Rotenberg Nir,
Lodahl Peter
Publication year - 2020
Publication title -
advanced quantum technologies
Language(s) - English
Resource type - Journals
ISSN - 2511-9044
DOI - 10.1002/qute.202000026
Subject(s) - quantum dot , nanophotonics , photonic crystal , common emitter , optoelectronics , photonics , spontaneous emission , photonic integrated circuit , waveguide , physics , materials science , optics , laser
Interfacing single emitters and photonic nanostructures enables modifying their emission properties, such as enhancing individual decay rates or controlling the emission direction. To achieve full control, the single emitter must be positioned in the nanostructures deterministically. Here, spectroscopy is used to gain spectral and spatial information about individual quantum dots (QD) in order to position each emitter in a predetermined location in a unit cell of a photonic‐crystal waveguide (PhCW). Depending on the spatial and spectral positioning within the structured nanophotonic mode, the quantum dot emission is observed to either be suppressed or enhanced. These results represent an important step towards unlocking the full potential of nanophotonic systems and will be crucial to the creation of complex multi‐emitter quantum photonic circuits.