M. Ahlskog, P. Hakonen, T. Heikkilä, T. Lehtinen, R. Lindell, M. Paalanen, L. Roschier, M. Sillanpää, R. Tarkiainen, V. Vaskelainen, T. Yamaguchi, and A. Laiho
Visitors: J. Delahaye, E. Sonin, and A. Zyuzin
We have developed, among others, record-sensitive SET-components made out of carbon nanotubes and nearly back-action-free, reactively read superconducting electrometers. In addition, we have developed a novel, low-noise current amplifier, Bloch Oscillating Transistor, which lies between the superconducting quantum interferometer (SQUID) and the SET according to its characteristics. The same circuit has been employed for measurements of very small noise currents and their higher order moments. One of the central themes in the successful development of the above mentioned devices has been a long-term undertaking of understanding the dissipative quantum dynamics of a single, mesoscopic Josephson junction.