SSIP: automated surgery with quantum LDPC codes

Understand

We present Safe Surgery by Identifying Pushouts (SSIP), an open-source lightweight Python package for automating surgery between qubit CSS codes.

• SSIP is flexible: it is capable of performing both external surgery, that is surgery between two codeblocks, and internal surgery, that is surgery within the same codeblock.
• Under the hood, it performs linear algebra over $\mathbb{F}_2$ governed by universal constructions in the category of chain complexes.
• We demonstrate on quantum Low-Density Parity Check (qLDPC) codes, which are not topological codes in general, and are of interest for near-term fault-tolerant quantum computing.