---
title: "The random coupled-plaquette gauge model and the surface code under circuit-level noise"
url: https://daily.dev/posts/the-random-coupled-plaquette-gauge-model-and-the-surface-code-under-circuit-level-noise-yjq7k4efh
source_url: https://www.nature.com/articles/s41534-026-01271-6
type: article
source: "Nature"
published: 2026-08-05T06:46:24.241Z
updated: 2026-08-05T06:46:44.392Z
tags: ["data-science", "quantum-computing"]
reading_time: 3
upvotes: 0
comments: 0
language: en
---

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# The random coupled-plaquette gauge model and the surface code under circuit-level noise

**[Nature](https://daily.dev/sources/nature)** · 3 min read · 0 upvotes · 0 comments

## Summary

A new statistical mechanical model called the random coupled-plaquette gauge model (RCPGM) is introduced to improve decoding of surface codes under noisy conditions. By optimally accounting for Y-errors in syndrome measurements, the model raises the fundamental error threshold from 4.3% (uncoupled RPGM) to 6% under phenomenological depolarizing noise. For circuit-level noise, an approximate reduction technique yields a threshold of 1.4% versus 0.7% for the uncoupled approach. Results are obtained via Parallel Tempering Monte Carlo simulations and expand the landscape of statistical mechanical mappings for quantum error correction, suggesting practical improvements for fault-tolerant quantum computation decoders.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.nature.com/articles/s41534-026-01271-6>

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Tags: [#data-science](https://daily.dev/tags/data-science), [#quantum-computing](https://daily.dev/tags/quantum-computing)

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