# Non-collinear generation of ultra-broadband parametric fluorescence photon pairs using chirped quasi-phase matching slab waveguides

https://mdr.nims.go.jp/datasets/f82e037e-eddd-4bff-8e70-dc9e2f877cb7

## File

- [oe-31-14-23551.pdf](https://mdr.nims.go.jp/filesets/f0f04988-0977-471f-9df6-0845566902ca/download) ([Detail](https://mdr.nims.go.jp/filesets/f0f04988-0977-471f-9df6-0845566902ca.md))

## Id

f82e037e-eddd-4bff-8e70-dc9e2f877cb7

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-09T06:14:58.974600Z

## Updated at

2024-08-09T23:30:09.643952Z

## Published at

2024-08-09T23:30:10.340060Z

## Doi



## First published url

https://doi.org/10.1364/oe.488978

## Date published

2023-07-03

## Recorded date published

2023

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Non-collinear generation of ultra-broadband parametric fluorescence photon
    pairs using chirped quasi-phase matching slab waveguides
  title_type: original
  lang: en

## Description

- description: "We previously reported a scheme for collinear emission of high-efficiency
    and\r\nultra-broadband photon pairs using chirped quasi-phase matching (QPM) periodically
    poled\r\nstoichiometric lithium tantalate (PPSLT) ridge waveguides. However, collinearly
    emitted photon\r\npairs cannot be directly adopted for applications that are based
    on two-photon interference,\r\nsuch as quantum optical coherence tomography (QOCT).
    In this work, we developed a chirped\r\nQPM device with a slab waveguide structure.
    This device was designed to produce spatially\r\nseparable (photon pair non-collinear
    emission) parametric fluorescence photon pairs with an\r\nultra-broadband bandwidth
    in an extremely efficient manner. Using a non-chirped QPM slab\r\nwaveguide, we
    observed a photon pair spectrum with a full-width-at-half-maximum (FWHM)\r\nbandwidth
    of 26 nm. When using a 3% chirped QPM slab waveguide, the FWHM bandwidth of\r\nthe
    spectrum increased to 190 nm, and the base-to-base width is 308 nm. We also confirmed
    a\r\ngeneration efficiency of 2.4×106 pairs/(µW·s) using the non-chirped device,
    and a efficiency of\r\n8×105 pairs/(µW·s) using the 3% chirped device under non-collinear
    emission conditions after\r\nsingle-mode fiber coupling. This is, to the best
    of our knowledge, the first report of frequency\r\ncorrelated photon pairs generation
    using slab waveguide device as a source. In addition, using\r\nslab waveguides
    as photon pair sources, we performed two-photon interference experiments\r\nwith
    the non-chirped device and obtained a Hong–Ou–Mandel (HOM) dip with a FWHM of
    7.7\r\nµm and visibility of 98%. When using the 3% chirped device as photon pair
    source, the HOM\r\nmeasurement gave a 2 µm FWHM dip and 74% visibility."
  description_type: abstract
  lang: und

## Creator

- name: Bo Cao
  role: author
- name: Kyohei Hayama
  role: author
- name: Shun Suezawa
  role: author
- name: Mamoru Hisamitsu
  role: author
- name: Katsuhiko Tokuda
  role: author
- name: Sunao Kurimura
  role: author
  orcid: https://orcid.org/0000-0001-5220-1873
  organization: National Institute for Materials Science
- name: Ryo Okamoto
  role: author
- name: Shigeki Takeuchi
  role: author

## Contact agent



## Publisher

organization: Optica Publishing Group

## Managing organization



## Keyword

- subject: Quantum telecom
  schema: not_defined
- subject: SLT
  schema: not_defined
- subject: quasi phase matching
  schema: not_defined
- subject: wavelength conversion
  schema: not_defined

## Rights

- description: "© 2023 Optica Publishing Group. Users may use, reuse, and build upon
    the article, or use the article for text or data mining, so long as such uses
    are for non-commercial purposes and appropriate attribution is maintained. All
    other rights are reserved."
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: OPTICS EXPRESS
  issn: '10944087'
  volume: '31'
  issue: '14'
  start_page: 23551
  end_page: 23562

## Conference



## Related item



## Funding

- identifier: Grant No. JPMJCR1674
  funder_name: Core Research for Evolutional Science and Technology
- identifier: Grant No. JPMXS0118067634
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: Cabinet Office, Government of Japan PRISM
- identifier: Grant No. 21H04444
  funder_name: Japan Society for the Promotion of Science
- funder_name: MEXT WISE Program

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## Fileset

- id: f0f04988-0977-471f-9df6-0845566902ca
  filename: oe-31-14-23551.pdf
  content_type: application/pdf
  size: 3341152
  md5: c9d1abf5ed9114d4f0f1561bbcfda6e4

## Thumbnail

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filename: oe-31-14-23551.pdf