Progress Toward a 1 V Pulse-Driven AC Josephson Voltage Standard

被引：70

作者：

Benz, Samuel P. ^{[1
]}

Dresselhaus, Paul D. ^{[1
]}

Ruefenacht, Alain ^{[1
]}

Bergren, Norman F. ^{[1
]}

Kinard, Joseph R. ^{[2
]}

Landim, Regis Pinheiro ^{[3
]}

机构：

[1] Natl Inst Stand & Technol, Boulder, CO 80305 USA

[2] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

[3] Natl Inst Metrol Standardizat & Ind Qual Inmetro, BR-20261232 Rio De Janeiro, Brazil

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2009年 / 58卷 / 04期

关键词：

Digital-analog conversion; Josephson arrays; quantization; signal synthesis; standards; superconductor-normal-superconductor devices; voltage measurement;

D O I：

10.1109/TIM.2008.2007019

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a new record root mean square (rms) output voltage of 275 mV, which is a 25% improvement over the maximum that is achieved with previous ac Josephson voltage standard (ACJVS) circuits. We demonstrate the operating margins for these circuits and use them to measure the harmonic distortion of a commercial digitizer. Having exceeded the threshold of 125 mV rms for a single array of Josephson junctions, we propose and discuss the features of an eight-array circuit that is capable of achieving 1 V rms. We investigate the use of a resistive divider to extend the ACJVS voltage accuracy to higher voltages. By the use of a switched-input measurement technique, an integrating sampling digital voltmeter, a resistive voltage divider, and ACJVS synthesized sine waves as reference voltages, we characterize the stability of a commercial calibration source for a few voltages up to 2.7 V.

引用

页码：838 / 843

页数：6

共 11 条

[1] Precision measurements using a 300 mV Josephson arbitrary waveform synthesizer [J].