PT Journal
AU Engel, A
   Aeschbacher, A
   Inderbitzin, K
   Schilling, A
   Il'in, K
   Hofherr, M
   Siegel, M
   Semenov, A
   Hübers, H
TI Tantalum nitride superconducting single-photon detectors with low cut-off energy
SO arXiv
JI arXiv
PY 2011
BP 9
DE SSPD
AB Materials with a small superconducting energy gap favor a high detection efficiency of low-energy photons in superconducting nanowire single-photon detectors. We developed a TaN detector with smaller gap and lower density of states at the Fermi energy than in comparable NbN devices, while other relevant parameters remain essentially unchanged. This results in a reduction of the minimum photon energy required for direct detection to $\approx1/3$ as compared to NbN.
PI arXiv:1110.4576
ER