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Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides

Published

Author(s)

Varun Verma, Richard Mirin, Sae Woo Nam, Jan P. Hoepker, Maximilian Protte, Raimund Ricken, Victor Quiring, Christof Eigner, Christine Silberhorn, Tim J. Bartley

Abstract

We demonstrate the integration of amorphous tungsten silicide superconducting nanowire single- photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-principle detection of evanescently-coupled photons of wavelength 1550nm using bidirectional waveguide coupling for two orthogonal polarization directions. We investigate the internal detection efficiency as well as detector absorption using coupling-independent characterization measurements. Furthermore, we describe strategies to improve the yield and efficiency of these devices.
Citation
Journal of Physics: Photonics

Keywords

lithium niobate, superconductor, nanowire, detector, single-photon

Citation

Verma, V. , Mirin, R. , Nam, S. , Hoepker, J. , Protte, M. , Ricken, R. , Quiring, V. , Eigner, C. , Silberhorn, C. and Bartley, T. (2021), Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides, Journal of Physics: Photonics (Accessed July 15, 2024)

Issues

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Created July 28, 2021, Updated May 5, 2023