Ejrnaes, M., Casaburi, A. , Quaranta, O., Marchetti, S., Gaggero, A., Mattioli, F., Leoni, R., Pagano, S. and Cristiano, R. (2009) Large signal amplitude and bias range of cascade switch superconducting nanowire single photon detectors. IEEE Transactions on Applied Superconductivity, 19(3), pp. 323-326. (doi: 10.1109/TASC.2009.2019034)
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Abstract
Cascade switch superconducting nanowire single photon detectors has been fabricated of ultrathin NbN films deposited by DC-magnetron sputtering at room temperature on MgO substrates. Detectors using 4 to 24 nanowires in parallel, having an area coverage of 5times mum2 and a filling factor of 40%, have been investigated. Signal amplitudes increase with the number of parallel nanowires and reaches 12.3 mV with a signal noise of 20 muV. The range of bias currents where the detectors emit signal pulses also increase with the number of parallel nanowires and exceeds the nanowire critical current.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Casaburi, Dr Alessandro |
| Authors: | Ejrnaes, M., Casaburi, A., Quaranta, O., Marchetti, S., Gaggero, A., Mattioli, F., Leoni, R., Pagano, S., and Cristiano, R. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | IEEE Transactions on Applied Superconductivity |
| ISSN: | 1051-8223 |
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