Electronically adjustable delay for Josephson technology

Abstract
An electronically adjustable time delay circuit for superconducting technology is reported. In conjunction with a superconducting sampler on the same chip, the delay circuit has allowed measurement of waveforms with an apparent resolution of 8.5 ps. The delay circuit permits flicker-free oscilloscope displays of fast waveforms, and provides the circuitry needed for further speed advances in superconducting sampling and other ultra-fast measurement techniques.

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