Improved energy resolution of a superconducting single-photon detector (2008)
Semenov, Alexey, Haas, Philipp, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael, Kirste, Alexander, ...
We demonstrated successful operation of an NbN single photon detector in the temperature range from 6 K to 1.2 K using a 3He sorption refrigerator combined with a pulse-tube mechanical cooler. The...
Current-induced critical state in NbN thin-film structures (2008)
Ilin, Konstantin, Siegel, Michael, Engel, Andreas, Bartolf, Holger, Schilling, Andreas, Semenov, Alexey, ...
The temperature dependence of the critical current of NbN thin-film bridges was experimentally studied. At low temperatures we observed significant enhancement (up to two times at 4 K) of the...
Energy resolution of a superconducting nanowire single-photon detector (2008)
Semenov, Alexey, Haas, Philipp, Günther, Burdhardt, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael
An energy resolution of 0.6 eV was achieved with an NbN superconducting nanowire single-photon detector for near infrared photons in the energy range from 1.2 eV to 0.8 eV. The detector operates at 6...
Vortex-based single-photon response in nanostructured superconducting detectors (2008)
Semenov, Alexey, Haas, Philipp, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael, Kirste, Alexander, ...
In nanostructured superconducting films interaction of magnetic vortices with radiation quanta provides an additional mechanism of radiation detection. Below the Kosterlitz–Thouless topological...
Temperature- and field-dependence of critical currents in NbN microbridges (2008)
Engel, Andreas, Bartolf, Holger, Schilling, Andreas, Ilin, Konstantin, Siegel, Michael, Semenov, Alexei, ...
We report measurements of the critical current of nano- and micrometer-sized NbN bridges as a function of temperature and magnetic eld. The bridges were fabricated from 4 to 10 nm thick, sputtered...
Ultra-thin NbN films on Si: crystalline and superconducting properties (2008)
Ilin, Konstantin, Schneider, R, Gerthsen, D, Engel, Andreas, Bartolf, Holger, Schilling, Andreas, ...
We present results on superconducting and crystalline properties of NbN films with a thickness smaller than 10 nm. The films were deposited using reactive magnetron sputtering on heated silicon...
Energy resolution and sensitivity of a superconducting quantum detector (2007)
Semenov, Alexey, Haas, Philipp, Ilin, Konstantin, Hübers, Heinz-Wilhelm, Siegel, Michael, Engel, Andreas, ...
Single-photon detectors from thin niobium nitride nanostrips show moderate energy resolution along with the cut-off of the quantum efficiency in the near-infrared spectral range. To describe the...
Terahertz performance of integrated lens antennas with a hot-electron bolometer (2007)
Semenov, Alexey, Richter, Heiko, Hübers, Heinz-Wilhelm, Günther, Burghardt, Smirnov, Andrey, Ilin, Konstantin, ...
Radiation coupling efficiency and directive properties of integrated lens antennas with log-spiral, log-periodic and double-slot planar feeds coupled to a hot-electron bolometer were experimentally...
Semenov, Alexei, Engel, Andreas, Hübers, Heinz-Wilhelm, Ilin, Konstantin, Siegel, Michael
We have studied supercurrent-assisted formation of the resistive state in nano-structured Nb and NbN superconducting films after absorption of a single photon. In amorphous narrow NbN strips the...
Berlin, Freie Universiẗat, Diss., 2003 (Nicht für den Austausch).