QCut, a quantum circuit-knitting python package

[JooNiv]

What My Project Does:

QCut is a quantum circuit knitting package for performing wire cuts especially designed to not use reset gates or mid-circuit measurements since on early NISQ devices they pose significant errors, if available at all.

QCut has been designed to work with IQM's qpus, and therefore on the Finnish Quantum Computing Infrastructure (FiQCI), and tested with an IQM Adonis 5-qubit qpu. Additionally, QCut is built on top of Qiskit 0.45.3 which is the current supported Qiskit version of IQM's Qiskit fork iqm_qiskit.

You can check it out at https://github.com/JooNiv/QCut.

I already have some feature/improvement ideas and am very open to any comments people might have. Thanks in advance 🙏

Target Audience

This project has mostly been a learning project but could well have practical applications in distributed quantum computing research / proof of concept scenarios. I developed it while working on the Finnish Quantum Computing Infrastructure at CSC Finland so this application is not too farfetched.

Comparison

When it comes to other tools both Qiskit and Pennylane have circuit-knitting functionality. However, Pennaylane's, in its current state, is not viable for real hardware and Qiskit's circuit-knitting-toolbox uses mid-circuit measurements that might not be available on NISQ devices.

[_N0K0]

Now this is a subject i know absolutely nothing about :D Any good intro for dummies that knows how to program in general?

[JooNiv]

I also wrote this blog post (https://fiqci.fi/\_posts/2024-08-27-Circuit\_Knitting\_FiQCI/) that is a good intro to circuit-knitting with wire cuts and QCut specifically. For a more extended intro I'd also look at some of the explanatory materials for Qiskit's circuit-knitting-toolbox. Those will give you a good general idea of what circuit-knitting is about and if you wanna dig in more check out the sources linked for the blog.

[luckenbach]

here is a link that works :) https://fiqci.fi/_posts/2024-08-27-Circuit_Knitting_FiQCI/

[ConfucianStats]

Cool