Fabrication and characteristics of elementary oxide RSFQ circuits

An SFQ-dc converter and a voltage amplifier have been designed and fabricated for use in oxide RSFQ circuits. The SFQ-dc converter comprised a stack of SQUIDs and switches to voltage state by injection of the SFQ signal current. The voltage amplifier was formed by increasing the number of stacked SQ...

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Veröffentlicht in:	Physica. C, Superconductivity Superconductivity, 2003-10, Vol.392, p.1426-1432
Hauptverfasser:	Tarutani, Yoshinobu, Ishimaru, Yoshihiro, Wakana, Hironori, Horibe, Masahiro, Adachi, Seiji, Sugiyama, Hideyuki, Oshikubo, Yasuo, Horibe, Osami, Suzuki, Toshiaki, Tanabe, Keiichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Ac Josephson current Oxide RSFQ circuit SFQ-dc converter SQUID stack Voltage amplifier
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	An SFQ-dc converter and a voltage amplifier have been designed and fabricated for use in oxide RSFQ circuits. The SFQ-dc converter comprised a stack of SQUIDs and switches to voltage state by injection of the SFQ signal current. The voltage amplifier was formed by increasing the number of stacked SQUIDs more than three. Operations of these SFQ-dc converters and voltage amplifiers were experimentally verified. The output voltage was almost proportional to the number of stacked SQUIDs. The output voltage greater than 1 mV was obtained by increasing the number of stacked SQUIDs up to five.
ISSN:	0921-4534 1873-2143
DOI:	10.1016/S0921-4534(03)01059-1