Linearity of quantized voltages generated by a Josephson-junction array

Journal Article · Fri Mar 31 23:00:00 EST 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Instrumentation and Measurement; (USA)

DOI:https://doi.org/10.1109/19.192294· OSTI ID:5201834

Sakamoto, Y; Endo, T; Murayama, Y; Sakauraba, T ^[1]

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1. Electrotechnical Lab., 1-1-4 Umezono, Tsukuba-shi, Ibaraki 305 (JP)

A measurement system is proposed to examine experimentally the linearity of quantized voltages generated by a Josephson-junction array at 100 MV and 1 V with an accuracy better than 1 X10/sup -8/. Ten resistors, connected in series, are driven by a constant current source and the total voltage drop is compared with the sum of the voltages across each resistor. A preliminary experiment at the 0.2-ppm level was performed. The largest problem for the lower accuracy than expected was the instability of the junction array's voltages, which seems to be attributable to imperfect cryostat design.

• OSTI ID: 5201834
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Instrumentation and Measurement; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Instrumentation and Measurement; (USA) Vol. 38:2; ISSN IEIMA; ISSN 0018-9456
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONTROL EQUIPMENT
CRYOSTATS
DATA
DESIGN
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
EXPERIMENTAL DATA
INFORMATION
JOSEPHSON JUNCTIONS
JUNCTIONS
NUMERICAL DATA
PERFORMANCE TESTING
PHYSICAL PROPERTIES
QUANTIZATION
RESISTORS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TESTING
THERMOSTATS