Ajou University repository

Photon-pair generation using inverse-designed thin-film lithium niobate mode convertersoa mark
  • Kwon, Kiwon ;
  • Heo, Hyungjun ;
  • Lee, Dongjin ;
  • Kim, Hyeongpin ;
  • Jang, Hyeong Soon ;
  • Shin, Woncheol ;
  • Lim, Hyang Tag ;
  • Kim, Yong Su ;
  • Han, Sang Wook ;
  • Kim, Sangin ;
  • Shin, Heedeuk ;
  • Kwon, Hyounghan ;
  • Jung, Hojoong
Citations

SCOPUS

5

Citation Export

Publication Year
2024-05-01
Journal
APL Photonics
Publisher
American Institute of Physics
Citation
APL Photonics, Vol.9 No.5
Mesh Keyword
Entangled photon pairsLithium niobateLithium Niobate WaveguideMode converterOn chipsPeriodically poledPhoton pairs generationsPhotonics devicesSpontaneous parametric down-conversionThin-films
All Science Classification Codes (ASJC)
Atomic and Molecular Physics, and OpticsComputer Networks and Communications
Abstract
Spontaneous parametric down-conversion (SPDC) has become a key method for generating entangled photon pairs. Periodically poled thin-film lithium niobate (TFLN) waveguides induce strong SPDC but require complex fabrication processes. In this work, we experimentally demonstrate efficient SPDC and second harmonic generation using modal phase matching methods. This is achieved with inverse-designed optical mode converters and low-loss optical waveguides in a single nanofabrication process. Inverse design methods provide enhanced functionalities and compact footprints for the converter. Despite the extensive achievements in inverse-designed photonic integrated circuits, the potential of inverse-designed TFLN quantum photonic devices has been seldom explored. The device shows an on-chip conversion efficiency of 3.95% W−1 cm−2 in second harmonic generation measurements and a coincidence count rate up to 21.2 kHz in SPDC experiments. This work highlights the potential of the inverse-designed TFLN photonic devices and paves the way for their applications in on-chip nonlinear or quantum optics.
ISSN
2378-0967
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/34222
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85193987314&origin=inward
DOI
https://doi.org/10.1063/5.0192026
Journal URL
http://aip.scitation.org/journal/app
Type
Article
Funding
This research was supported by the Institute for Information and Communications Technology Promotion (IITP) (Grant Nos. 2020-0-00947, 2020-0-00972, and 2020-0-00890), the National Research Council of Science and Technology (NST) (Grant No. CAP21031-200), the National Research Foundation (NRF) (Grant Nos. 2022M3K4A1097119, 2023M3K5A1094805), and the Korea Institute of Science and Technology (KIST) research program (Grant Nos. 2E32941, 2E32971).
Show full item record

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Kim, Sangin Image
Kim, Sangin김상인
Department of Intelligence Semiconductor Engineering
Read More

Total Views & Downloads

File Download

  • There are no files associated with this item.