NbTiN superconducting nanowire detectors for visible and telecom wavelengths single photon counting on Si3N4 photonic circuits

NbTiN superconducting nanowire detectors for visible and telecom wavelengths single photon counting on Si3N4 photonic circuits

We demonstrate niobium titanium nitride superconducting nanowires patterned on stoichiometric silicon nitride waveguides for detecting visible and infrared photons. The use of silicon nitride on insulator on silicon substrates allows us to simultaneously realize photonic circuits for visible and inf...

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Bibliographic Details
Published in:Applied physics letters Vol. 102; no. 5
Main Authors: Schuck, C, Pernice, WHP, Tang, H X
Format: Journal Article
Language:English
Published: 04-02-2013
Subjects:
Detectors
Nanocomposites
Nanomaterials
Nanostructure
Nanowires
Photonics
Photons
Silicon nitride
Wavelengths
Online Access:Get full text
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Description
Summary:We demonstrate niobium titanium nitride superconducting nanowires patterned on stoichiometric silicon nitride waveguides for detecting visible and infrared photons. The use of silicon nitride on insulator on silicon substrates allows us to simultaneously realize photonic circuits for visible and infrared light and integrate them with nanowire detectors directly on-chip. By implementing a traveling wave detector geometry in this material platform, we achieve efficient single photon detection for both wavelength regimes. Our detectors are an ideal match for integrated quantum optics as they provide crucial functionality on a wideband transparent waveguide material.
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ISSN:0003-6951
1077-3118
DOI:10.1063/1.4788931