Answers are grounded in this paper and cite their sources.
An ultrahigh-resolution Josephson-technology sampling system has been designed and tested. A complex test signal containing a 10-ps rise time was measured and agreed very well with the signal expected from simulations. The intrinsic rise time (step response) of the sampling system is believed to be about 6 ps. External analog circuitry was used to automate the system.
No takes yet. Share an insight, caveat, or question.
David B. Tuckerman (1980) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: