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NbN nanowire superconducting single photon detectors fabricated on MgO substrates.

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Title: NbN nanowire superconducting single photon detectors fabricated on MgO substrates.
Authors: Bitauld, D.1 d.bitauld@tue.nl, Marsili, F.1,2, Fiore, A.1, Gaggero, A.3, Mattioli, F.3, Leoni, R.3, Benkahoul, M.2, Lévy, F.2
Source: Journal of Modern Optics. Jan2009, Vol. 56 Issue 2/3, p395-400. 6p. 1 Diagram, 5 Graphs.
Subjects: Nanowires, Detectors, Photons, Substrates (Materials science), Superconductors, Lithography
Abstract: We report on the fabrication and characterization of high performance nanowire superconducting single photon detectors (SSPD) on MgO substrates. The deposition of the superconducting material (NbN) has been performed by magnetron sputtering at 400°C. This deposition temperature is low enough to be compatible with the fabrication on traditional optical materials like GaAs. First, SSPD meanders covering a surface of 5 × 5 µm2 were characterized. We measured quantum efficiencies up to 20% at 1300 nm. Then, we used a straight 250 µm-long NbN nanowire to perform a spatially resolved measurement of the efficiency. Both efficiency dips and peaks were observed. The dips were correlated to lithographic defects, as confirmed by scanning electron microscopy. Conversely, no evidence of a lithographic origin of efficiency peaks was found. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 36677987
AccessLevel: 6
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PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: NbN nanowire superconducting single photon detectors fabricated on MgO substrates.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Modern+Optics%22">Journal of Modern Optics</searchLink>. Jan2009, Vol. 56 Issue 2/3, p395-400. 6p. 1 Diagram, 5 Graphs.
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  Data: We report on the fabrication and characterization of high performance nanowire superconducting single photon detectors (SSPD) on MgO substrates. The deposition of the superconducting material (NbN) has been performed by magnetron sputtering at 400°C. This deposition temperature is low enough to be compatible with the fabrication on traditional optical materials like GaAs. First, SSPD meanders covering a surface of 5 × 5 µm2 were characterized. We measured quantum efficiencies up to 20% at 1300 nm. Then, we used a straight 250 µm-long NbN nanowire to perform a spatially resolved measurement of the efficiency. Both efficiency dips and peaks were observed. The dips were correlated to lithographic defects, as confirmed by scanning electron microscopy. Conversely, no evidence of a lithographic origin of efficiency peaks was found. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/09500340802677050
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        Text: English
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      – SubjectFull: Detectors
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      – SubjectFull: Photons
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      – SubjectFull: Substrates (Materials science)
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      – SubjectFull: Superconductors
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      – SubjectFull: Lithography
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      – TitleFull: NbN nanowire superconducting single photon detectors fabricated on MgO substrates.
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              Text: Jan2009
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