Development of RSFQ voltage drivers for arbitrary AC waveform synthesisers

Autor:	M. Khabipov, J. Niemeyer, Johannes Kohlmann, F Maibaum, F.-I. Buchholz, D. Hagedorn, M Schilling
Rok vydání:	2006
Předmět:	Josephson effect History Engineering business.industry Electrical engineering Computer Science Applications Education law.invention Pi Josephson junction SQUID Digital pattern generator law Rapid single flux quantum Waveform business Electronic circuit Voltage
Zdroj:	Journal of Physics: Conference Series. 43:1175-1178
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/43/1/286
Popis:	We have realised RSFQ circuits for an integrated bit pattern generator to drive large Josephson junction arrays and synthesise arbitrary AC waveforms. We present test circuits to investigate the driving of junction arrays by sequences of voltage pulses. To elevate the level of voltage pulses, the circuits have been terminated by SQUID stack voltage drivers. Drivers of various bit lengths and different designs, in pure-serial and in combined parallel-and-serial SFQ pulse processing modes, were developed, fabricated and tested. Voltage amplification by factors four and eight were obtained. The circuits were realised in 4-µm Nb SIS trilayer technology with externally shunted Josephson junctions (critical current density: 1 kA/cm2).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b6e93787f4a3290e2e6182981e01cd23 https://doi.org/10.1088/1742-6596/43/1/286 Zobrazit plný text záznamu