Circular photonic crystal grating design for charge-tunable quantum light sources in the telecom C-band

authored by: M. A. Chenxi, Jingzhong Yang, L. I. Pengji, Eddy P. Rugeramigabo, Michael Zopf, Fei Ding
Abstract: Efficient generation of entangled photon pairs at telecom wavelengths is a key ingredient for long-range quantum networks. While embedding semiconductor quantum dots into hybrid circular Bragg gratings has proven effective, it conflicts with p-i-n diode heterostructures which offer superior coherence. We propose and analyze hybrid circular photonic crystal gratings, incorporating air holes to facilitate charge carrier transport without compromising optical properties. Through numerical simulations, a broad cavity mode with a Purcell factor of 23 enhancing both exciton and biexciton transitions, and exceptional collection efficiency of 92.4% into an objective with numerical aperture of 0.7 are achieved. Furthermore, our design demonstrates direct coupling efficiency over 90.5% into a single-mode fiber over the entire telecom C-band. The hybrid circular photonic crystal grating thereby emerges as a promising solution for the efficient generation of highly coherent, polarization-entangled photon pairs.
Organisation(s): Institute of Solid State Physics
Laboratory of Nano and Quantum Engineering
QuantumFrontiers
Type: Article
Journal: Optics express
Volume: 32
Pages: 14789-14800
No. of pages: 12
ISSN: 1094-4087
Publication date: 05.04.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Electronic version(s): https://doi.org/10.48550/arXiv.2401.01447 (Access: Open)
https://doi.org/10.1364/OE.517758 (Access: Open)

BibTeX

@article{91250a65eaa24704972091483487eb69,
title = "Circular photonic crystal grating design for charge-tunable quantum light sources in the telecom C-band",
abstract = "Efficient generation of entangled photon pairs at telecom wavelengths is a key ingredient for long-range quantum networks. While embedding semiconductor quantum dots into hybrid circular Bragg gratings has proven effective, it conflicts with p-i-n diode heterostructures which offer superior coherence. We propose and analyze hybrid circular photonic crystal gratings, incorporating air holes to facilitate charge carrier transport without compromising optical properties. Through numerical simulations, a broad cavity mode with a Purcell factor of 23 enhancing both exciton and biexciton transitions, and exceptional collection efficiency of 92.4% into an objective with numerical aperture of 0.7 are achieved. Furthermore, our design demonstrates direct coupling efficiency over 90.5% into a single-mode fiber over the entire telecom C-band. The hybrid circular photonic crystal grating thereby emerges as a promising solution for the efficient generation of highly coherent, polarization-entangled photon pairs.",
author = "Chenxi, {M. A.} and Jingzhong Yang and Pengji, {L. I.} and Rugeramigabo, {Eddy P.} and Michael Zopf and Fei Ding",
note = "Funding Information: European Research Council (GA101043851, GA715770); Bundesministerium f{\"u}r Bildung und Forschung (03ZU1209DD, 13N16291, 16KISQ015, 16KISQ117); Deutsche Forschungsgemeinschaft (390837967, EXC-2123, GZ: INST 187/880-1 AOBJ: 683478); Nieders{\"a}chsisches Ministerium f{\"u}r Wissenschaft und Kultur (76251-1009/2021).",
year = "2024",
month = apr,
day = "5",
doi = "10.48550/arXiv.2401.01447",
language = "English",
volume = "32",
pages = "14789--14800",
journal = "Optics express",
issn = "1094-4087",
publisher = "OSA - The Optical Society",
number = "8",
}