PTB News 2.2021
Josephson arbitrary waveform synthesizers (JAWS) allow quantized AC voltages to be synthesized with arbitrary and spectrally pure waveforms. At PTB, a pulse-driven Josephson standard for the generation of AC voltages with series arrays has been realized. These arrays are based on stacks of up to five Josephson junctions. This new technology has allowed the integration density of the circuits – and thus their output voltage – to be considerably increased: With up to 30 000 junctions per chip, it is now possible to generate an effective voltage of 0.5 V RMS (0.7 V peak). The yield of the fabrication process has been clearly increased by adapting various parameters.
Source: Multilayer sandwich – PTB.de
