Nano antenna-assisted quantum dots emission into high-index planar waveguide

Integrated quantum photonic circuits require the efficient coupling of photon sources to photonic waveguides. Hybrid plasmonic/photonic platforms are a promising approach, taking advantage of both plasmon modal confinement for efficient coupling to a nearby emitter and photonic circuitry for optical...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2024-02
Main Authors: X Yu, J -C Weeber, Markey, L, Arocas, J, Bouhelier, A, Leray, A, G Colas des Francs
Format: Article
Language:English
Subjects:
Circuits
Coupling
Data transfer (computers)
Design optimization
Directivity
Emission
Emitters
Nano-optics
Nanoantennas
Optical properties
Photonics
Planar waveguides
Plasmonics
Quantum dots
Yagi antennas
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Integrated quantum photonic circuits require the efficient coupling of photon sources to photonic waveguides. Hybrid plasmonic/photonic platforms are a promising approach, taking advantage of both plasmon modal confinement for efficient coupling to a nearby emitter and photonic circuitry for optical data transfer and processing. In this work, we established directional quantum dot (QD) emission coupling to a planar TiO\(_2\) waveguide assisted by a Yagi-Uda antenna. Antenna on waveguide is first designed by scaling radio frequency dimensions to nano-optics, taking into account the hybrid plasmonic/photonic platform. Design is then optimized by full numerical simulations. We fabricate the antenna on a TiO\(_2\) planar waveguide and deposit a few QDs close to the Yagi-Uda antenna. The optical characterization shows clear directional coupling originating from antenna effect. We estimate the coupling efficiency and directivity of the light emitted into the waveguide.
ISSN:2331-8422