Package: qat-compiler
QAT(Quantum Assembly Toolchain) is a low-level quantum compiler and runtime which facilitates executing quantum IRs
such asQASM,OpenPulseandQIRagainst QPU drivers.
It facilitates the execution of largely-optimised code, converted into abstract pulse- and hardware-level instructions,
which are then transformed and delivered to an appropriate driver.InstallationQAT can be installed fromPyPIvia:pip install qat-compilerBuilding from SourceWe usepoetryfor dependency management and run onPython 3.8+.
Once both of these are installed run this in the root folder to install all the dependencies that you need:poetry installNoteIf you are contributing to the project we recommend that you also runpoetry run pre-commit installto enable pre-commit checks.RoadmapThis is a list of what we’re currently working on! If you want to get involved, contact the person or group linked.In-development:Classical-quantum hybrid computation.John DumbellRuntime-embedded QEC.Jamie FrielDesigning / verifying suitability:Distributed QPU execution.John DumbellTo-do:Full QASM v3 support. Currently waiting for available parsers.ContributingTo take the first steps towards contributing to QAT, visit ourcontributiondocuments, which provides details about our
process.
We also encourage new contributors to familiarise themselves with thecode of conductand to adhere to these
expectations.Where to get helpFor support, please reach out in theDiscussionstab of this repository or file anissue.LicenceThis code in this repository is licensed under the BSD 3-Clause Licence.
Please seeLICENSEfor more information.FeedbackPlease let us know your feedback and any suggestions by reaching out inDiscussions.
Additionally, to report any concerns orcode of conductviolations please use thisform.FAQWhy is this in Python?Mixture of reasons. Primary one is that v1.0 was an early prototype and since the majority of the quantum community
know Python it was the fastest way to build a system which the most people could contribute to building. The API’s would
always stick around anyway, but as time goes on the majority of its internals has been, is being, or will be moved to Rust/C++.Where do I get started?Our tests are a good place to start as they will show you the various ways to run QAT. Running and then stepping
through how it functions is the best way to learn.We have what’s known as an echo model and engine which is used to test QATs functionality when not attached to a QPU.
You’ll see these used almost exclusively in the tests, but you can also use this model to see how QAT functions on
larger and more novel architectures.High-level architectural documents are incoming and will help explain its various concepts at a glance, but
right now aren’t complete.What OS’s does QAT run on?Windows and Linux are its primary development environments. Most of its code is OS-agnostic but we can’t
guarantee it won’t have bugs on untried ones. Dependencies are usually where you’ll have problems, not the core
QAT code itself.If you need to make changes to get your OS running feel free to PR them to get them included.I don’t see anything related to OQC’s hardware here!Certain parts of how we run our QPU have to stay propriety and for our initial release we did not have time to
properly unpick this from things we can happily release. We want to release as much as possible and as you’re
reading this are likely busy doing just that.Do you have your own simulator?We have a real-time chip simulator that is used to help test potential changes and their ramifications to hardware.
It focuses on accuracy and testing small-scale changes so should not be considered a general simulator. 3/4 qubit
simulations is its maximum without runtime being prohibitive.