Scalable Quantum Error Mitigation with Neighbor-Informed Learning

• URL: http://arxiv.org/abs/2512.12578v1
• Date: Sun, 14 Dec 2025 07:07:48 GMT
• Title: Scalable Quantum Error Mitigation with Neighbor-Informed Learning
• Authors: Zhenyu Chen, Bin Cheng, Minbo Gao, Xiaodie Lin, Ruiqi Zhang, Zhaohui Wei, Zhengfeng Ji,
• Abstract summary: We introduce neighbor-informed learning (NIL), a versatile and scalable quantum error mitigation framework.<n>NIL learns to predict the ideal output of a target quantum circuit from the noisy outputs of its structurally related neighbor'' circuits.<n>A key innovation is our 2-design training method, which generates training data for our machine learning model.
• Score: 16.56662295818668
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Noise in quantum hardware is the primary obstacle to realizing the transformative potential of quantum computing. Quantum error mitigation (QEM) offers a promising pathway to enhance computational accuracy on near-term devices, yet existing methods face a difficult trade-off between performance, resource overhead, and theoretical guarantees. In this work, we introduce neighbor-informed learning (NIL), a versatile and scalable QEM framework that unifies and strengthens existing methods such as zero-noise extrapolation (ZNE) and probabilistic error cancellation (PEC), while offering improved flexibility, accuracy, efficiency, and robustness. NIL learns to predict the ideal output of a target quantum circuit from the noisy outputs of its structurally related ``neighbor'' circuits. A key innovation is our 2-design training method, which generates training data for our machine learning model. In contrast to conventional learning-based QEM protocols that create training circuits by replacing non-Clifford gates with uniformly random Clifford gates, our approach achieves higher accuracy and efficiency, as demonstrated by both theoretical analysis and numerical simulation. Furthermore, we prove that the required size of the training set scales only \emph{logarithmically} with the total number of neighbor circuits, enabling NIL to be applied to problems involving large-scale quantum circuits. Our work establishes a theoretically grounded and practically efficient framework for QEM, paving a viable path toward achieving quantum advantage on noisy hardware.

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