We have investigated the static, charge-trapping properties of a hybrid superconductor---normal metal electron turnstile embedded into a high-ohmic environment. The device includes a local Cr resistor on one side of the turnstile, and a superconducting trapping island on the other side. The electron hold times, t ~ 2-20s, in our two-junction circuit are comparable with those of typical multi-junction, N >= 4, normal-metal single-electron tunneling devices. A semi-phenomenological model of the environmental activation of tunneling is applied for the analysis of the switching statistics. The experimental results are promising for electrical metrology.
@article{arxiv.1010.2168,
title = {Single-charge escape processes through a hybrid turnstile in a dissipative environment},
author = {Sergey V Lotkhov and Olli-Pentti Saira and Jukka P Pekola and Alexander B Zorin},
journal= {arXiv preprint arXiv:1010.2168},
year = {2015}
}