Self-Correcting Quantum Circuits via Entanglement-Based Redundancy

Jincheng Zhang

Published Aug 28, 2026• 0 citations

Abstract

This paper explores a novel approach to quantum error correction (QEC) centered around the deliberate incorporation of entanglement-based redundancy directly within the design of quantum circuits. Current QEC strategies often rely on external, post-processing correction stages, which introduce significant overhead and complexity. We argue that a more efficient and intrinsically robust solution lies in building self-correcting circuits where redundancy is woven into the circuit's architecture itself, utilizing entangled qubits to detect and mitigate errors in real-time. This approach shifts the paradigm from correction *after* computation to correction *during* computation. The core mechanism involves encoding logical information across multiple physical qubits through carefully designed entangled states, creating a network capable of detecting errors via measurement and then implementing corrective operations through controlled interactions. We present a theoretical framework for designing such circuits, detailing the key considerations for state preparation, entanglement distribution, and error detection/correction protocols. We demonstrate, through mathematical analysis and circuit design principles, that this entanglement-based redundancy can substantially improve the resilience of quantum computations against various noise sources. The proposed method offers a potentially transformative pathway towards fault-tolerant quantum computing, reducing the overall complexity and resource requirements associated with error correction.

DOI: 10.5281/zenodo.22137620

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