Regensburg 2022 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 37: Superconducting Electronics: SQUIDs, Qubits, Circuit QED

TT 37.4: Talk

Friday, September 9, 2022, 10:15–10:30, H22

RF superconducting arbitrary waveform generator for Qubit control — •Hao Tian, Oliver Kieler, Alexander Fernandez Scarioni, Silke Wolter, Rolf-Werner Gerdau, Johannes Kohlmann, and Mark Bieler — Physikalisch Technische Bundesanstalt

The Josephson Arbitrary Waveform Synthesizer (JAWS) allows for the quantum-accurate-generation of spectrally-pure, arbitrary waveforms. It consists of a series array of Josephson junctions and is driven by GHz bit sequences (current pulses). So far, JAWS circuits are mainly used at National Metrology Institutes for metrological purposes with output frequencies in the kHz to MHz frequency range. Within the scope of the national QuMIC project, PTB and other partners are currently further developing JAWS circuits with the aim to realize a compact and robust module, which is suitable for control and readout of superconducting qubits. In this talk, we will present the work, which is currently undertaken at PTB to reach this goal. Here, the main focus lies on the design and the fabrication of novel JAWS circuits and complex waveguide filters, capable of synthesizing arbitrary waveforms at GHz frequencies. This work was partly supported by German Federal Ministry of Education and Research (contract number: 13N15934).