TY - JOUR

T1 - Circular photonic crystal grating design for charge-tunable quantum light sources in the telecom C-band

AU - Chenxi, M. A.

AU - Yang, Jingzhong

AU - Pengji, L. I.

AU - Rugeramigabo, Eddy P.

AU - Zopf, Michael

AU - Ding, Fei

N1 - Funding Information: European Research Council (GA101043851, GA715770); Bundesministerium für Bildung und Forschung (03ZU1209DD, 13N16291, 16KISQ015, 16KISQ117); Deutsche Forschungsgemeinschaft (390837967, EXC-2123, GZ: INST 187/880-1 AOBJ: 683478); Niedersächsisches Ministerium für Wissenschaft und Kultur (76251-1009/2021).

PY - 2024/4/5

Y1 - 2024/4/5

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85190118346&partnerID=8YFLogxK

U2 - 10.48550/arXiv.2401.01447

DO - 10.48550/arXiv.2401.01447

M3 - Article

AN - SCOPUS:85190118346

VL - 32

SP - 14789

EP - 14800

JO - Optics express

JF - Optics express

SN - 1094-4087

IS - 8

ER -