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

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 نشر من قبل Jan Philipp H\\\"opker
 تاريخ النشر 2021
  مجال البحث فيزياء
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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 1550nm wavelength 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.



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