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Enhanced telecom wavelength single-photon detection with NbTiN superconducting nanowires on oxidized silicon

Tanner, M. G. and Natarajan, C. M. and Pottapenjara, V. K. and O'Connor, J. A. and Warburton, R. J. and Hadfield, R. H. and Baek, B. and Nam, S. and Dorenbos, S. N. and Urena, E. B. and Zijlstra, T. and Klapwijk, T. M. and Zwiller, V.. (2010) Enhanced telecom wavelength single-photon detection with NbTiN superconducting nanowires on oxidized silicon. Applied physics letters, Vol. 96, H. 22 , 221109.

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Official URL: http://edoc.unibas.ch/dok/A5842072

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Abstract

Superconducting nanowire single-photon detectors (SNSPDs) have emerged as a highly promising infrared single-photon detector technology. Next-generation devices are being developed with enhanced detection efficiency (DE) at key technological wavelengths via the use of optical cavities. Furthermore, new materials and substrates are being explored for improved fabrication versatility, higher DE, and lower dark counts. We report on the practical performance of packaged NbTiN SNSPDs fabricated on oxidized silicon substrates in the wavelength range from 830 to 1700 nm. We exploit constructive interference from the SiO2/Si interface in order to achieve enhanced front-side fiber-coupled DE of 23.2 % at 1310 nm, at 1 kHz dark count rate, with 60 ps full width half maximum timing jitter. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3428960]
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimental Physics (Warburton)
UniBasel Contributors:Warburton, Richard J
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0003-6951
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:14 Sep 2012 07:19
Deposited On:14 Sep 2012 06:52

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