Transmon-based thermometrics through integrated control of cryo-system parameters and automated quantum chip diagnostics

Thermometric analysis of superconducting qubits gives valuable insights into their environment such as the quantum processor, the I/O unit they are connected to, and the steadily increasing number of components required for scaling the cryogenic part of the quantum system. Analyzing their various decoherence channels and minimizing their thermal load becomes increasingly important.Hence, here we report on the development of an quantum chip test setup in which cryogenic and quantum control units are fully integrated to enable efficient and automated quantum chip testing and qualification. Purpose-built cryogenic and quantum control hardware systems are integrated under a unified control platform which provides an application-specific operating system for quantum chip control [1]. This integrated quantum test setup offers a practical advantage in the optimization of quantum chip characterization [2]. The unified software interface allows for intelligent feedback between quantum control parameters and cryogenic control and monitoring. This enables novel features for the prevention, diagnostics and mitigation of a range of practical issues that can occur in cryogenic chip diagnostics, as well as providing a unified interface for quantum experiments involving cryogenic parameters. [1] https://orangeqsjuice.org; [2] https://quantify-os.gitlab.io