Controlling and reading a quantum computer require the generation and acquisition of many microwave signals. Their quality directly influences the performances of the quantum computer in terms of control and readout fidelity. That requires the ability to generate and acquire signals with low noise, low phase noise, high bandwidth, low latency, and critically long-term stability. The typical solution involves the use of carefully calibrated IQ mixers, but it has the drawback of relatively small practical bandwidth and poor long-term stability. Regular calibration is continuously needed to ensure optimal operation, which limits the availability of the quantum computer and increases its maintenance. This presentation will show how the double-superheterodyne conversion scheme can be used to fulfil all these goals, particularly relatively about the absence of periodic re-calibration, clean spectrum and high bandwidth. It will address the link between these features and their impact on real-life quantum computing experiments.
Dr. Andrea Corna, Zurich Instruments (on behalf of Rohde & Schwarz)
Klik hier om de presentatie terug te kijken
Klik hier om de PDF-versie van de presentatie te bekijken
Terug naar het programma