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

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 1550 nm wavelength using bidirectional waveguide couplin...

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Bibliographic Details
Published inJPhys photonics Vol. 3; no. 3; pp. 34022 - 34029
Main Authors Höpker, Jan Philipp, Verma, Varun B, Protte, Maximilian, Ricken, Raimund, Quiring, Viktor, Eigner, Christof, Ebers, Lena, Hammer, Manfred, Förstner, Jens, Silberhorn, Christine, Mirin, Richard P, Woo Nam, Sae, Bartley, Tim J
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2021
Subjects
Coupling
Detectors
integrated detectors
integrated optics
lithium niobate
Lithium niobates
Metal silicides
Nanowires
Photons
Silicides
superconducting detectors
Superconductivity
Titanium
Tungsten compounds
Waveguides
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Summary: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 1550 nm 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.
Bibliography:JPPHOTON-100363.R1
ISSN:2515-7647
2515-7647
DOI:10.1088/2515-7647/ac105b