Photon-pair sources for chip-scale quantum technology

Imad I. Faruque*, Ben M. Burridge, Siddarth K. Joshi, John G. Rarity, Jorge Barreto

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Quantum technology promises to deliver quantum computers, unbreakable communication and ultra-sensitive sensors. Quantum photonics is one of the prominent platforms of quantum technology which utilizes photons - often called flying qubits. Entanglement generated from a photon-pair source is a crucial resource for many quantum photonic implementations, for example, an entanglement-based global quantum network and metrology beyond classical limits. Here, we will discuss our recent results of chip-scale photon-pair sources in silicon photonics. These results are focused on improving brightness, spectral purity and indistinguishability of the photon-pair sources, for example, by engineering photonic structures and temporal pulse shaping. We have found that both methods have trade-offs among brightness, spectral purity and indistinguishability. Additionally, we have observed that generating a high-fidelity quantum state using a quantum photonic circuit requires sufficient isolation between the nonlinear photon-pair sources and the linear photonic circuit. It is crucial to remove the nonlinear effect of the strong pump both before and after the sources to limit the spurious photon-pair generation which contaminates the target quantum state.

Original languageEnglish
Title of host publicationQuantum Sensing and Nano Electronics and Photonics XIX
EditorsManijeh Razeghi, Giti A. Khodaparast, Miriam S. Vitiello
PublisherSPIE - The International Society for Optical Engineering
ISBN (Electronic)9781510659650
DOIs
Publication statusPublished - 2023
EventQuantum Sensing and Nano Electronics and Photonics XIX 2023 - San Francisco, United States
Duration: 29 Jan 20232 Feb 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12430
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceQuantum Sensing and Nano Electronics and Photonics XIX 2023
Country/TerritoryUnited States
CitySan Francisco
Period29/01/232/02/23

Bibliographical note

Publisher Copyright:
© 2023 SPIE.

Research Groups and Themes

  • QETLabs

Keywords

  • heralded single-photon source
  • micro-resonator
  • nonlinear optics
  • photon-pairs source
  • Quantum photonics
  • silicon photonics
  • spontaneous four wave mixing

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