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Development of Josephson Voltage Standards

A primary objective of this group is the development of measurement techniques and instruments for the calibration of voltage, which include  the synthesis of dc and ac voltage.

 

A section of an array of Josephson Junctions

A section of an array of Josephson Junctions. On the left hand side are the microwave lines, and at the bottom are the control wires for individual segments. The Josephson-chips comprise a series of SNS (Superconductor/Normalconductor/ Superconductor) junctions.

 

Our cooperation with Department 2.4 Quantum Electronics and Work Group 2.43 Josephson Circuits, ensures alignment of the chip parameters with the measurement setups and devices.

 

Current-voltage-diagram of a programmable 1 V array 

Current-voltage-diagram of a programmable 1 V array with multiple Josephson junctions.

 

 

Synthesised waveform with constant voltage steps 

Synthesised waveform with constant voltage steps.

 

 

 

 

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