Title :
Development of a Quantum AC Voltage Standard Based on Externally Shunted Josephson Arrays
Author :
Nissilã, J. ; Ojasalo, K. ; Kemppinen, A. ; Manninen, A. ; Hassel, J. ; Helistö, P. ; Seppã, H.
Author_Institution :
Centre for Metrol. & Accreditation, Espoo
Abstract :
An AC-voltage standard operating at 1 V level at 1 kHz based on nonhysteretic Josephson junction arrays (JJA) is under development. The electronics connected to the array is now sufficiently fast and noiseless when aiming at a 1-ppm accuracy. Some preliminary results and the current setup and status are reported
Keywords :
measurement standards; superconducting arrays; superconducting junction devices; voltage measurement; 1 V; 1 kHz; externally shunted Josephson arrays; nonhysteretic Josephson junction arrays; quantum AC voltage standard; Accreditation; Frequency; Information technology; Josephson junctions; Metrology; Operational amplifiers; Optical buffering; Shape measurement; Standards development; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305509
