High-speed demonstration of an output interface driver for single-flux quantum systems

Author

Harada, Naoki ; Yoshida, Akira ; Yokoyama, Naoki

Author_Institution

Fujitsu Ltd., Atsugi, Japan

Volume

12

Issue

3

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

1852

Lastpage

1856

Abstract

The high-speed operation of a one-channel output interface for a single-flux quantum (SFQ) system has been demonstrated. The interface consisted of a Josephson latching driver, a room-temperature semiconductor amplifier, and a decision circuit module. The Josephson latching driver was fabricated by using a 2.5-kA/cm² standard Nb junction process and used to amplify an SFQ pulse into a 5.5-mV level signal at 10 Gb/s. The interface converted the SFQ pulse signal into a nonreturn-to-zero signal having an amplitude of 1 V at 10 Gb/s

Keywords

Josephson effect; driver circuits; high-speed integrated circuits; niobium; superconducting logic circuits; 1 V; 10 Gbit/s; 5.5 mV; Josephson latching driver; Josephson logic; Nb; Nb junction process; SFQ pulse signal; decision circuit module; high-speed operation; nonreturn-to-zero signal; one-channel output interface; output interface driver; room-temperature semiconductor amplifier; single-flux quantum system; Bit error rate; Clocks; Driver circuits; Educational technology; Frequency; Josephson junctions; Pulse amplifiers; Semiconductor optical amplifiers; Signal to noise ratio; Voltage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.801814

Filename

1029174