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Good quantum codes with addressable and parallelizable non-Clifford gates

Published: October 22, 2025 | arXiv ID: 2510.19809v1

By: Virgile Guemard

Potential Business Impact:

Makes quantum computers work faster and more reliably.

Business Areas:
Quantum Computing Science and Engineering

We revisit a family of good quantum error-correcting codes presented in He $\textit{et al.}$ (2025), and we show that various sets of addressable and transversal non-Clifford multi-control-$Z$ gates can be performed in parallel. The construction relies on the good classical codes of Stichtenoth (IEEE Trans. Inf. Theory, 2006), which were previously instantiated in He $\textit{et al.}$ (2025), to yield quantum CSS codes over which addressable logical $\mathsf{CCZ}$ gates can be performed at least one at a time. Here, we show that for any $m$, there exists a family of good quantum error-correcting codes over qudits for which logical $\mathsf{C}^{m}\mathsf{Z}$ gates can address specific logical qudits and be performed in parallel. This leads to a significant advantage in the depth overhead of multi-control-$Z$ circuits.

Page Count
18 pages

Category
Physics:
Quantum Physics