Characterisation of SINIS programmable Josephson arrays at Justervesenet

摘要

Justervesenet (JV) have developed two set-ups for programmable Josephson arrays. One set-up for arrays operating up to 20 GHz and one for frequencies from 72.5 GHz to 76 GHz. The set-ups and results from the characterisation of three different programmable arrays of the intrinsically shunted SINIS type are presented. The arrays were a /spl sim/20 mV array with 512 junctions binary divided into 8 segments operating from 10 GHz to 20 GHz and two 1 volt arrays operating at 72.5 to 76 GHz with 8192 junctions binary divided into 14 and 6 segments. All arrays were manufactured by the Physicalisch-Technische Bundesanstalt (PTB) in Germany.