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Effect of the wire width on the intrinsic detection efficiency of superconducting-nanowire single-photon detectorsстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Lusche R., Semenov A., Ilin K., Siegel M., Korneeva Y., Trifonov A., Korneev A., Goltsman G., Vodolazov D., Hübers H.W.
- Журнал: Journal of Applied Physics
- Том: 116
- Номер: 043906
- Год издания: 2014
- Издательство: AIP Publishing
- Местоположение издательства: United States
- DOI: 10.1063/1.4891105
- Аннотация: A thorough spectral study of the intrinsic single-photon detection efficiency in superconducting TaN and NbN nanowires with different widths has been performed. The experiment shows that the cut-off of the intrinsic detection efficiency at near-infrared wavelengths is most likely controlled by the local suppression of the barrier for vortex nucleation around the absorption site. Beyond the cut-off quasi-particle diffusion in combination with spontaneous, thermally activated vortex crossing explains the detection process. For both materials, the reciprocal cut-off wavelength scales linearly with the wire width where the scaling factor agrees with the hot-spot detection model.
- Добавил в систему: Гольцман Григорий Наумович