arXiv:2512.04016quant-phcs.AI2025-12被引 1

TARA通过自适应秩测试实现量子异常检测,提供严格的统计保障。

TARA Test-by-Adaptive-Ranks for Quantum Anomaly Detection with Conformal Prediction Guarantees

  • 结合共形预测与序列鞅检验,无需分布假设
  • 在真实量子设备上实现0.96的判别准确率,安全裕度超44%
  • 揭示了标准训练测试分割会高估抗攻击能力的问题

量子密钥分发的安全性依赖于区分真实量子关联与经典窃听模拟的能力,但现有认证方法在有限样本和对抗场景下缺乏严格的统计保证。我们提出TARA(基于自适应秩的测试),融合共形预测与序列鞅检验,实现无分布假设的严格有效性。TARA-k基于柯尔莫哥洛夫-斯米尔诺夫校准,针对局部隐变量模型,实现量子-经典区分的ROC AUC=0.96;TARA-m采用投注鞅实现流式检测,支持任意时刻的类型I误差控制,适用于实时量子信道监控。理论证明在(条件交换性)下,共形p值仍均匀分布,表明量子非定域性不会破坏共形预测的有效性,这一结论对非经典数据上的分布无关方法具有普遍意义。在IBM Torino(超导,CHSH=2.725)和IonQ Forte Enterprise(离子阱,CHSH=2.716)设备上的广泛验证显示跨平台鲁棒性,安全裕度高于经典界限2达36%。关键发现:同分布校准可使检测性能虚高高达44个百分点,提示以往使用标准训练测试划分的量子认证研究可能系统性高估了对抗鲁棒性。

原文摘要 · Abstract (English)

Quantum key distribution (QKD) security fundamentally relies on the ability to distinguish genuine quantum correlations from classical eavesdropper simulations, yet existing certification methods lack rigorous statistical guarantees under finite-sample conditions and adversarial scenarios. We introduce TARA (Test by Adaptive Ranks), a novel framework combining conformal prediction with sequential martingale testing for quantum anomaly detection that provides distribution-free validity guarantees. TARA offers two complementary approaches. TARA k, based on Kolmogorov Smirnov calibration against local hidden variable (LHV) null distributions, achieving ROC AUC = 0.96 for quantum-classical discrimination. And TARA-m, employing betting martingales for streaming detection with anytime valid type I error control that enables real time monitoring of quantum channels. We establish theoretical guarantees proving that under (context conditional) exchangeability, conformal p-values remain uniformly distributed even for strongly contextual quantum data, confirming that quantum contextuality does not break conformal prediction validity a result with implications beyond quantum certification to any application of distribution-free methods to nonclassical data. Extensive validation on both IBM Torino (superconducting, CHSH = 2.725) and IonQ Forte Enterprise (trapped ion, CHSH = 2.716) quantum processors demonstrates cross-platform robustness, achieving 36% security margins above the classical CHSH bound of 2. Critically, our framework reveals a methodological concern affecting quantum certification more broadly: same-distribution calibration can inflate detection performance by up to 44 percentage points compared to proper cross-distribution calibration, suggesting that prior quantum certification studies using standard train test splits may have systematically overestimated adversarial robustness.

量子安全异常检测共形预测统计保障

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