Application of Josephson series arrays to a DC quantum voltmeter

Author

Behr, Ralf ; Grimm, Lambert ; Funck, Torsten ; Kohlmann, Johannes ; Schulze, Holger ; Müller, Franz ; Schumacher, Bernd ; Warnecke, Peter ; Niemeyer, Jürgen

Author_Institution

Phys. Tech. Bundesanstalt, Braunschweig, Germany

Volume

50

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

185

Lastpage

187

Abstract

Josephson series arrays with a binary sequence of nonhysteretic superconductor-insulator-normal metal-insulator-superconductor (SINIS) junctions have been realized. The arrays of up to 8192 junctions (14 bits) are operated at microwave frequencies of about 70 GHz with low microwave power. An electronic system was built to drive an automated dc quantum voltmeter. Two electrically isolated quantum voltmeters (QVMs) in the same cryoprobe and driven by one frequency have been used for calibrating resistive dividers with the intention of demonstrating some advantages of these instruments

Keywords

Josephson effect; measurement standards; resistors; superconducting junction devices; superconducting microwave devices; voltage dividers; voltage measurement; voltmeters; 70 GHz; DC quantum voltmeter; Josephson series arrays; Nb-Al-AlO; NbAlO_x; SINIS; automated dc quantum voltmeter; binary sequence; cryoprobe; electrically isolated quantum voltmeters; microwave frequencies; resistive dividers; superconductor-insulator-normal metal junctions; Attenuation; Frequency; Josephson junctions; Microwave antenna arrays; Microwave generation; Microwave oscillators; Niobium; Stripline; Voltage; Voltmeters;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.918097

Filename

918097