---
_id: '48599'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>The biexciton‐exciton emission cascade
    commonly used in quantum‐dot systems to generate polarization entanglement yields
    photons with intrinsically limited indistinguishability. In the present work,
    it focuses on the generation of pairs of photons with high degrees of polarization
    entanglement and simultaneously high indistinguishability. It achieves this goal
    by selectively reducing the biexciton lifetime with an optical resonator. It demonstrates
    that a suitably tailored circular Bragg reflector fulfills the requirements of
    sufficient selective Purcell enhancement of biexciton emission paired with spectrally
    broad photon extraction and twofold degenerate optical modes. The in‐depth theoretical
    study combines (i) the optimization of realistic photonic structures solving Maxwell's
    equations from which model parameters are extracted as input for (ii) microscopic
    simulations of quantum‐dot cavity excitation dynamics with full access to photon
    properties. It reports non‐trivial dependencies on system parameters and use the
    predictive power of the combined theoretical approach to determine the optimal
    range of Purcell enhancement that maximizes indistinguishability and entanglement
    to near unity values, here specifically for the telecom C‐band at 1550 nm.</jats:p>
author:
- first_name: David
  full_name: Bauch, David
  last_name: Bauch
- first_name: Dustin
  full_name: Siebert, Dustin
  last_name: Siebert
- first_name: Klaus
  full_name: Jöns, Klaus
  id: '85353'
  last_name: Jöns
- first_name: Jens
  full_name: Förstner, Jens
  id: '158'
  last_name: Förstner
  orcid: 0000-0001-7059-9862
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On‐Demand Indistinguishable
    and Entangled Photons Using Tailored Cavity Designs. <i>Advanced Quantum Technologies</i>.
    Published online 2023. doi:<a href="https://doi.org/10.1002/qute.202300142">10.1002/qute.202300142</a>
  apa: Bauch, D., Siebert, D., Jöns, K., Förstner, J., &#38; Schumacher, S. (2023).
    On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.
    <i>Advanced Quantum Technologies</i>. <a href="https://doi.org/10.1002/qute.202300142">https://doi.org/10.1002/qute.202300142</a>
  bibtex: '@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On‐Demand
    Indistinguishable and Entangled Photons Using Tailored Cavity Designs}, DOI={<a
    href="https://doi.org/10.1002/qute.202300142">10.1002/qute.202300142</a>}, journal={Advanced
    Quantum Technologies}, publisher={Wiley}, author={Bauch, David and Siebert, Dustin
    and Jöns, Klaus and Förstner, Jens and Schumacher, Stefan}, year={2023} }'
  chicago: Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher.
    “On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.”
    <i>Advanced Quantum Technologies</i>, 2023. <a href="https://doi.org/10.1002/qute.202300142">https://doi.org/10.1002/qute.202300142</a>.
  ieee: 'D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On‐Demand
    Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” <i>Advanced
    Quantum Technologies</i>, 2023, doi: <a href="https://doi.org/10.1002/qute.202300142">10.1002/qute.202300142</a>.'
  mla: Bauch, David, et al. “On‐Demand Indistinguishable and Entangled Photons Using
    Tailored Cavity Designs.” <i>Advanced Quantum Technologies</i>, Wiley, 2023, doi:<a
    href="https://doi.org/10.1002/qute.202300142">10.1002/qute.202300142</a>.
  short: D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, Advanced Quantum
    Technologies (2023).
date_created: 2023-11-03T10:07:38Z
date_updated: 2023-12-21T10:41:17Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '623'
doi: 10.1002/qute.202300142
keyword:
- tet_topic_qd
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://onlinelibrary.wiley.com/doi/10.1002/qute.202300142
oa: '1'
project:
- _id: '173'
  grant_number: '231447078'
  name: 'TRR 142 - C09: TRR 142 - Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch
    bei Telekom Wellenlängen (C09*)'
- _id: '167'
  grant_number: '231447078'
  name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
    eines photonischen Quantensystems (B06*)'
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Advanced Quantum Technologies
publication_identifier:
  issn:
  - 2511-9044
  - 2511-9044
publication_status: published
publisher: Wiley
related_material:
  record:
  - id: '43246'
    relation: earlier_version
    status: public
status: public
title: On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs
type: journal_article
user_id: '158'
year: '2023'
...