Cited by 79Photorefractive and Nonlinear OpticsSuperconducting and THz Device TechnologyQuantum Information and Cryptography

Lithium-niobate-on-insulator waveguide-integrated superconducting nanowire single-photon detectors

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Sayem, Ayed Al, Cheng, Risheng, Wang, Sihao, Tang, Hong X.·2020·Applied Physics Letters

Abstract

We demonstrate waveguide-integrated superconducting nanowire single-photon detectors on thin-film lithium niobate (LiNbO3, LN). Using a 250 μm-long NbN superconducting nanowire lithographically defined on top of a 125 μm-long LN nanowaveguide, an on-chip detection efficiency of 46% is realized with simultaneous high performance in dark count rates and timing jitter. As LN possesses high χ(2) second-order nonlinear and electro-optic properties, an efficient single-photon detector on thin-film LN opens up the possibility to construct a small-scale fully integrated quantum photonic chip, which includes single-photon sources, filters, tunable quantum gates, and detectors.

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Crossref · 10.1063/1.5142852

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  • Initial demonstrations of SPDs on TFLN have shown efficiency of 46% and timing resolution of 32 ps.

    “SPDs on TFLN must be improved beyond that shown in initial demonstrations, e.g. with respect to efficiency (46%) and timing resolution (32 ps) [81]”

    From 2022 Roadmap on integrated quantum photonics (2022) · cites this paper as [81]

    Experimental — accuracy not yet measured
  • Very recently, direct integration of SNSPDs on thin-film LN waveguides has been successfully demonstrated by overcoming a number of fabrication challenges.

    “Very recently, direct integration of SNSPDs on thin-film LN waveguides have been successfully demonstrated [420,421] by overcoming a number of fabrication challenges.”

    From Integrated photonics on thin-film lithium niobate (2021) · cites this paper as [420]

  • Integrated SNSPDs and amorphous-Si detectors can be fabricated by direct material deposition and patterning on LNOI waveguides.

    “Note that the integrated SNSPDs [420,421] and amorphous-Si detectors [422] discussed here can be fabricated by direct material deposition and patterning on LNOI waveguides.”

    From Integrated photonics on thin-film lithium niobate (2021) · cites this paper as [420]

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Authors
Sayem, A. A., Cheng, R., Wang, S., & Tang, H. X.
Affiliations
Yale University (US)
Corresponding author
Tang, Hong X.
Venue
Applied Physics Letters
Published
2020-04-13
Volume
116
Issue
15
ISSN
  • 0003-6951 (ISSN-L)
  • 1077-3118
OpenAlex
W2996192752
Cited by
1
References
33
Citations by year
2020: 1
FWCI
0.10
Type
journal article
Language
en
Open access
Locations
  • Applied Physics Letters (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
Funders
U.S. Department of Energy (DE-SC0019406)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Superconducting and THz Device Technology
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
Keywords
superconducting nanowire single-photon detectors, lithium niobate on insulator, thin-film lithium niobate, NbN nanowires, nanowaveguides, second-order nonlinear optics, electro-optical properties, dark count rate, timing jitter, detection efficiency

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