Quantum-referenced spontaneous emission tomography

I. I. Faruque*, B. M. Burridge, M. Banic, M. Borghi, J. E. Sipe, J. G. Rarity, J. Barreto

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)

Abstract

We present a method of tomography in which photon pairs from a device-under-test (DUT) are experimentally characterised by quantum interference with a reference photon pair source; we call this quantum-referenced spontaneous emission tomography (Q-SpET). In Q-SpET, the joint spectral phase (JSP) of photon pairs generated by a DUT can be reconstructed by combining four spectrally resolved interferograms. We demonstrate this theoretically and experimentally, characterising the JSP of a microresonator photon pair source. Our method is fully implemented on a chip, demonstrating the compactness, inherent phase stability, low complexity, and resource efficiency of this method.

Original languageEnglish
Article number045024
JournalQuantum Science and Technology
Volume8
Issue number4
DOIs
Publication statusPublished - Oct 2023

Bibliographical note

Funding Information:
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) under the Grant EP/L0240201. B M B acknowledges the support of the EPSRC training Grant EP/LO15730/1. The authors also acknowledge EPSRC’s additional support of the work via Grants EP/M024458/1, EP/K033085/1 and EP/N015126/1. M B and J E S acknowledge support from the Natural Sciences and Engineering Research Council of Canada; M B acknowledges support from the University of Toronto Faculty of Arts & Science Top Doctoral Fellowship.

Publisher Copyright:
© 2023 The Author(s). Published by IOP Publishing Ltd.

Research Groups and Themes

  • QETLabs

Keywords

  • integrated photonics
  • nonlinear optics
  • photon pairs
  • quantum optics
  • quantum tomography
  • single photon sources

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