Automated qubit testing with GRACE

We’re proud to launch a new package for Graph-based Automated Calibration Execution (GRACE).

GRACE is a framework for automated calibrations based on a directed acyclic graph. With GRACE you can visualize the dependencies between different calibration protocols and automatically execute these protocols.

GRACE can now be used with our Superconducting Qubit Tools (SCQT) to automate single qubit basic diagnostics of transmon qubits, up to the measurement of coherence times. Easily customize the testing graph for your own chip testing procedures. Make it as simple or complex as needed and customize the dependencies between them.

If you’re already an SCQT user, make sure to get in touch with your Orange QS contact person to add this package as part of your current Quantum Diagnostics Libraries license. Not an Orange QS customer yet and interested in automating your qubit testing? Contact us at!

This time compressed recording shows the automated testing of a single transmon qubit. With no prior knowledge of QPU parameters, GRACE performs diagnostics from feedline specification up to the measurement of coherence times in about 8 minutes, using an Orange Rack, as part of our Orange R&D System. Watch the recording at normal speed on YouTube.

With SCQT, you could already execute measurement and analysis protocols for most common experiments to measure qubit and quantum chip quality. SCQT enables you to extract relevant parameters, qubit coherence, single and two qubit gate fidelities and crosstalk parameters. For the full list of protocols, have a look at our Quantum Diagnostics Libraries.

Up to the measurement of coherence times, the automation is now stable and well-tested on real transmon qubits. This gives you several key practical advantages, like faster diagnostics, less human intervention, enabling overnight measurement runs and the simple execution of standard protocols that need to be run repeatedly or frequently.

Apart from our direct support, we give you access to extensive documentation, containing the following sections:

  • Getting started: Start with clear first steps to hit the ground running, quick installation instructions and a basic tutorial to create, visualize and execute your first calibration graph.
  • Tutorials: Use a collection of interactive lessons that guide you through a series of steps to get familiar with creating, modifying, visualizing and executing calibration graphs.
  • Examples: Fall back on a collection of task-oriented step-by-step guides to help address key problems and real-world use-cases of GRACE.
  • Concepts: Fill any gaps in your understanding with a guide that dives deeper into various topics on key concepts, useful context and background information.
  • References: Look up technical descriptions of the APIs and other aspects of GRACE’s machinery.

GRACE can also be used independently of the SCQT. We look forward to see how you will use GRACE to automate the testing of your specific qubits and quantum chips!