Real-time quantum-accurate voltage waveform synthesis

A pulse drive system capable of converting an arbitrary input signal into a delta sigma encoded pulse code stream in real time has been demonstrated. This system is based on the use of analog and digital hardware controlled by a Field Programmable Gate Array (FPGA) rather than using software to prod...

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Bibliographic Details
Main Authors: Ireland, Jane, Protheroe, Stephen, Williams, Jonathan, Belcher, Allan, Dekker, Ronald, Schaapman, Kars, Iuzzolino, Ricardo, Melo, Rodrigo, Valinoti, Bruno, Bierzychudek, Marcos, Sira, Martin, Herick, Jonas, Kieler, Oliver, Behr, Ralf
Format: Conference Proceeding
Language:English
Subjects:
Field programmable gate arrays
Frequency measurement
Josephson arbitrary waveform synthesizer
Josephson arrays
metrology
optoelectronics
Real-time systems
Sigma-delta modulation
Signal generators
Synthesizers
Voltage measurement
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Summary:A pulse drive system capable of converting an arbitrary input signal into a delta sigma encoded pulse code stream in real time has been demonstrated. This system is based on the use of analog and digital hardware controlled by a Field Programmable Gate Array (FPGA) rather than using software to produce the delta sigma code and then loading it into the memory of a commercial Pulse Pattern Generator (PPG). The results of using the system to drive a Josephson junction array to synthesize quantum-accurate voltage waveforms are presented. The advantage of such a system includes the significant reduction in time required to change waveform parameters. This provides an easily tunable source of high-fidelity stable voltage waveforms at low temperature for future applications including validation of components for use in quantum technologies.
ISSN:2160-0171
DOI:10.1109/CPEM49742.2020.9191715