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 language | English |
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Article number | 045024 |
Journal | Quantum Science and Technology |
Volume | 8 |
Issue number | 4 |
DOIs | |
Publication status | Published - 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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Spontaneous Emission Tomography
Barreto, J. (Creator), Burridge, B. (Creator), Faruque, I. (Creator), Rarity, J. G. (Contributor), Borghi, M. (Contributor), Banic, M. (Contributor) & Sipe, J. E. (Contributor), University of Bristol, 24 Apr 2022
DOI: 10.5523/bris.3ne98x0tsdsko2mueu5la1ysca, http://data.bris.ac.uk/data/dataset/3ne98x0tsdsko2mueu5la1ysca
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