Nanostripes of hybrid superconductor/ferromagnetic (S/F) NbN/NiCu bilayers and pure superconducting NbN nanostripes have been investigated in dark count experiments. Presence of a ferromagnetic layer influences the superconducting properties of the S/F bilayer, such as the critical current density and the transient photoresponse. The observed significant decrease of the dark-count rate is discussed in terms of vortex-related fluctuation models to shed more light in the intriguing question of the basic mechanism responsible for dark counts in superconducting nanostripe single photon detectors.
Dark counts in superconducting single-photon NbN/NiCu detectors / Parlato, Loredana; Nasti, U.; Ejrnaes, M.; Cristiano, R.; Myoren, H.; Sobolewski, Roman; Pepe, GIOVANNI PIERO. - 9504:(2015), p. 950404. (Intervento presentato al convegno SPIE Optics + Optoelectronics, 2015) [10.1117/12.2179672].
Dark counts in superconducting single-photon NbN/NiCu detectors
PARLATO, LOREDANA;PEPE, GIOVANNI PIERO
2015
Abstract
Nanostripes of hybrid superconductor/ferromagnetic (S/F) NbN/NiCu bilayers and pure superconducting NbN nanostripes have been investigated in dark count experiments. Presence of a ferromagnetic layer influences the superconducting properties of the S/F bilayer, such as the critical current density and the transient photoresponse. The observed significant decrease of the dark-count rate is discussed in terms of vortex-related fluctuation models to shed more light in the intriguing question of the basic mechanism responsible for dark counts in superconducting nanostripe single photon detectors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
