# Quantum circuits and error-correcting codes

> **Placeholder.** This problem is here so the problem panel can be tried out. Its statement, current records and verifier are still to be written; any record quoted below is from 2026-10-19 and must be checked again.

## Problem

Rewrite benchmark circuits from QASMBench and op-T-mize into equivalent circuits with fewer T gates, checked exactly by ZX-calculus rewriting or unitary comparison; and find stabilizer codes [[n, k, d]] whose distance is checked from their generators. The instance list and current records are still to be fixed.