Molybdenum Silicide Superconducting Nanowire Single-Photon Detectors on Lithium Niobate Waveguides

Marco Colangelo, Di Zhu, Linbo Shao, Jeffrey Holzgrafe, Emma K. Batson, Boris Desiatov, Owen Medeiros, Matthew Yeung, Marko Loncar, Karl K. Berggren

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate a molybdenum silicide superconducting nanowire single-photon detector heterogeneously integrated onto a thin-film lithium niobate waveguide. The detector achieves approximately 50% on-chip detection efficiency at 1550 nm with a jitter of 82 ps when measured at 0.78 K. This demonstration showcases the integration of an amorphous superconductor utilizing conventional fabrication processes without strict cooling and substrate requirements. This paves the way for the integration of additional superconducting electronic components, potentially realizing the full promise of integrated quantum photonic circuits.

Original languageEnglish
Pages (from-to)356-361
Number of pages6
JournalACS Photonics
Volume11
Issue number2
DOIs
StatePublished - 21 Feb 2024
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2024 American Chemical Society.

Funding

This research was sponsored by the National Science Foundation Grant ECCS102137723. M.C. was supported by the MIT Claude E. Shannon Award. D.Z. was supported by Harvard Quantum Initiative Postdoctoral Fellowship. M.Y. acknowledges support from the National Science Foundation Graduate Research Fellowship Program, Grant No. 1745302, and the MathWorks Fellowship. The opinions and views expressed in this publication are from the authors and not necessarily from the National Science Foundation or MathWorks. This research was sponsored by the National Science Foundation Grant ECCS102137723. M.C. was supported by the MIT Claude E. Shannon Award. D.Z. was supported by Harvard Quantum Initiative Postdoctoral Fellowship. M.Y. acknowledges support from the National Science Foundation Graduate Research Fellowship Program, Grant No. 1745302, and the MathWorks Fellowship. The opinions and views expressed in this publication are from the authors and not necessarily from the National Science Foundation or MathWorks.

FundersFunder number
Harvard Quantum Initiative postdoctoral fellowship1745302
MIT Claude E. Shannon Award
National Science Foundation or MathWorks
National Science FoundationECCS102137723

    Keywords

    • SNSPD
    • applied superconductivity
    • heterogeneous integration
    • quantum photonics
    • thin-film lithium niobate (TFLN)

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