A precise evaluation of NbN-based 1-V programmable Josephson voltage standard arrays

Author

Urano, Chiharu ; Murayama, Yasushi ; Iwasa, Akio ; Shoji, Akira ; Yamamori, Hirotake ; Ishizaki, M.

Author_Institution

Nat. Inst. of Adv. Ind. Sci. & Technol., Japan

Volume

54

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

645

Lastpage

648

Abstract

A NbN-based programmable Josephson voltage standard arrays (PJVAs) have been investigated. We show that these arrays can be utilized for programmable operation up to ±1 V. The results of direct comparisons between the PJVA and a conventional superconductor-insulator-superconductor Josephson array agree at voltages between 0.1 V and 1 V within an uncertainty of better than 1 nV. An indirect comparison via a Zener voltage reference also shows agreement within a 1σ type A uncertainty of 13 nV.

Keywords

measurement standards; niobium compounds; programmable circuits; superconductor-insulator-superconductor devices; titanium compounds; voltage measurement; 1 V; NbN-TiN; Zener voltage reference; indirect comparison; programmable Josephson voltage standard arrays; superconducting-normal-superconducting junction; superconductor-insulator-superconductor Josephson array; voltage measurement; Calibration; Filters; Frequency; Josephson junctions; Measurement standards; Superconducting device noise; Superconducting devices; Superconducting transition temperature; Testing; Voltage; Josephson array; programmable voltage standard; superconducting–normal–superconducting junction; voltage measurement; voltage standard;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2005.843530

Filename

1408254