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Title: Demonstration chip for measuring ac quantum voltage waveforms
Description: (1996) Laying the groundwork to produce highly accurate ac voltages, NIST researchers used this circuit with 512 Josephson junctions to measure the first quantized voltage steps produced with a pulse-driven waveform. The junctions are made of niobium electrodes with gold-palladium alloy barriers.

*PML, circuit, voltage, niobium

See also http://www.nist.gov/pml/history-volt/superconductivity_1990s.cfm.
Subjects (names):
Topics/Categories: Electronics--Superconductors
Type: Photo/Color
Source: National Institute of Standards and Technology
Credit Line as it should
appear in print:
Benz/NIST
AV Number: 11PML027
Date Created: 1996
Date Entered: 3/30/2011

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