Samuel Benz, Clark A. Hamilton, Charles J. Burroughs, Todd E. Harvey, Laurie Christian, J. X. Przybysz
We have designed and demonstrated a pulse-driven Josephson digital/analog converter. When used as a programmable voltage standard, this device can synthesize metrologically accurate ac waveforms as well as stable dc voltages. We show through simulations that Josephson quantization produces a nearly ideal quantization noise spectrum when a junction is driven with a typical waveform produced by a digital code generator. This technique has been demonstrated in preliminary experiments with arrays of 1000 junctions clocked at frequencies up to 12 Gbit/s where sine waves of a few millivolts in amplitude were synthesized at frequencies up to 1 MHz.
IEEE Transactions on Applied Superconductivity
digital/analog converter, frequency synthesis, Josephson junction, superconductivity
, Hamilton, C.
, Burroughs, C.
, Harvey, T.
, Christian, L.
and Przybysz, J.
Pulse-Driven Josephson Digital/Analog Converter, IEEE Transactions on Applied Superconductivity
(Accessed December 1, 2023)