Experimental realization of quantum Zeno dynamics for robust quantum metrology

• URL: http://arxiv.org/abs/2601.01987v1
• Date: Mon, 05 Jan 2026 10:43:59 GMT
• Title: Experimental realization of quantum Zeno dynamics for robust quantum metrology
• Authors: Ran Liu, Xiaodong Yang, Xiang Lv, Xinyue Long, Hongfeng Liu, Dawei Lu, Ying Dong, Jun Li,
• Abstract summary: Quantum Zeno dynamics (QZD) provides a promising approach for protecting quantum information from noise.<n>We introduce strong inter-particle interactions during the parameter encoding stage.<n>We experimentally validate the proposed scheme on a nuclear magnetic resonance platform.
• Score: 9.842826080772468
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Quantum Zeno dynamics (QZD), which restricts the system's evolution to a protected subspace, provides a promising approach for protecting quantum information from noise. Here, we explore a practical approach to harnessing QZD for robust quantum metrology. By introducing strong inter-particle interactions during the parameter encoding stage, we overcome the typical limitations of previous QZD studies, which have largely focused on single-particle systems and faced challenges where QZD could interfere with the encoding process. We experimentally validate the proposed scheme on a nuclear magnetic resonance platform, achieving near-optimal precision scaling under amplitude damping in both parallel and sequential settings. Numerical simulations further demonstrate the scalability of the approach and its compatibility with other control techniques for suppressing more general types of noise. These findings highlight QZD as a powerful strategy for noise-resilient quantum metrology.

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