Direkt zum InhaltDirekt zur SucheDirekt zur Navigation
▼ Zielgruppen ▼

Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Optical Systems

Humboldt-Universität zu Berlin | Faculty of Mathematics and Natural Sciences | Department of Physics | Optical Systems | Publications | Physical mechanisms of timing jitter in photon detection by current-carrying

Maria Sidorova, Alexej Semenov, Heinz-Wilhelm Hübers, Ilya Charaev, A. A Kuzmin, Stefan Doerner, and Michael Siegel (2017)

Physical mechanisms of timing jitter in photon detection by current-carrying

Physical Review B, 96(184504):10.

We studied timing jitter in the appearance of photon counts in meandering nanowires with different fractional amount of bends. Intrinsic timing jitter, which is the probability density function of the random time delay between photon absorption in current-carrying superconducting nanowire and appearance of the normal domain, reveals two different underlying physical mechanisms. In the deterministic regime, which is realized at large photon energies and large currents, jitter is controlled by position-dependent detection threshold in straight parts of meanders. It decreases with the increase in the current. At small photon energies, jitter increases and its current dependence disappears. In this probabilistic regime jitter is controlled by Poisson process in that magnetic vortices jump randomly across the wire in areas adjacent to the bends.

single-photon detectors, timing jitter, superconducting nanowires