# OptQC quantum codes support full Clifford operations without extra qubits

_Published Saturday, October 3, 2026 at 12:08 PM EDT · Science · Latest · Tier 2 — Notable_

OptQC and collaborators developed quantum error-correction codes that support the entire logical Clifford group without additional qubits or complex measurements, Quantum Zeitgeist reports. That group defines a set of operations on protected quantum information.

The construction uses symmetries in classical codes and transversal and fold-transversal gates, which limit error propagation during computation. The codes maintain an asymptotically constant encoding rate while the weight of their error-checking operations grows more slowly than logarithmically with qubit count.

Initial testing focused on smaller instances. Whether the resource benefits persist at scales needed for complex problems remains unproven.

## Sources

- [quantumzeitgeist.com](https://quantumzeitgeist.com/quantum-codes-constant-rate-clifford-actions/)

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Canonical: https://techandbusiness.org/newswire/EO_w8whxVCtBV0ESd7p3zb
Published: 2026-10-03T16:08:03.608Z
Story chronology: 2026-10-03T15:16:56.000Z
Retrieved: 2026-10-03T19:11:09.956Z
Publisher: Tech & Business (techandbusiness.org)