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

被引:100
作者
Tanner, M. G. [1 ,2 ]
Natarajan, C. M. [1 ,2 ]
Pottapenjara, V. K. [1 ,2 ]
O'Connor, J. A. [1 ,2 ]
Warburton, R. J. [1 ,2 ]
Hadfield, R. H. [1 ,2 ]
Baek, B. [3 ]
Nam, S. [3 ]
Dorenbos, S. N. [4 ]
Urena, E. Bermudez [4 ]
Zijlstra, T. [4 ]
Klapwijk, T. M. [4 ]
Zwiller, V. [4 ]
机构
[1] Heriot Watt Univ, Scottish Univ Phys Alliance, Edinburgh EH14 4AS, Midlothian, Scotland
[2] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland
[3] Natl Inst Stand & Technol, Boulder, CO 80305 USA
[4] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands
基金
英国工程与自然科学研究理事会;
关键词
infrared detectors; nanowires; niobium compounds; superconducting photodetectors; timing jitter; titanium compounds; DETECTION EFFICIENCY; OPTICAL CAVITY; 1550; NM; SYSTEM; FIBER; NBN;
D O I
10.1063/1.3428960
中图分类号
O59 [应用物理学];
学科分类号
摘要
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]
引用
收藏
页数:3
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