用于容错纠缠辅助光学干涉测量的局部加扰量子存储器
Protecting Astronomical Interferometry through Quantum-Memory Scrambling
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中文总结 AI 辅助
研究提出纠缠辅助长基线光学干涉测量的容错扩展方案，通过局部加扰编码器保护量子存储器，推导相关模型和信息矩阵，证明局部校正可恢复相关参数，给出解耦界限猜想并制定协议约束。
中文摘要 AI 辅助
我们提出了一种纠缠辅助长基线光学干涉测量的容错扩展方案，其中天文光学相干性首先被相干映射到分布式量子存储器，随后由局部加扰编码器进行保护。该方案与现有的基于存储器的戈特斯曼 - 詹内温 - 克罗克（GJC）干涉仪不同，后者量子存储器存储辅助单光子纠缠参考而非天文状态本身。我们推导了弱热光模型、其双参数量子费舍尔信息（QFI）矩阵、GJC测量概率以及相关经典费舍尔信息（CFI）。证明了标记擦除的精确局部校正可恢复完整的复可见度、其QFI矩阵以及操作GJC CFI。相关保护标准是参考 - 环境解耦，而非仅体积律纠缠。我们给出了局部随机编码器和有限深度加扰器的定量解耦界限猜想，并推导了每个节点擦除少于一半物理存储器的预期阈值。最后，我们制定了物理上有意义的分布式协议所需的相位协方差和超选择规则约束。
英文摘要
Preserving the complex visibility of coherently captured starlight is essential for quantum-assisted long-baseline interferometry, because this nonlocal coherence carries the spatial information needed to form astronomical images. Yet finite memory lifetime and imperfect retrieval inevitably produce storage failures; when a failed cell is heralded, its erased subsystem can leak which-node information to the environment and dephase the stored coherence. Strict finite-dimensional (\(U(1)\)) covariance further forbids uniform exact correction of all single-memory erasures. We address this combined physical and symmetry-imposed limit using local number-conserving quantum scrambling, parameter-independent pattern-conditioned recovery, and a fixed Gottesman--Jennewein--Croke receiver. We prove a channel-to-Fisher-information stability theorem that converts approximate logical recovery into an operational guarantee on receiver-accessible information over compact visibility regions. All-pattern finite-size simulations show that scrambling redistributes erasure risk and suppresses high-leakage events, while a separate equal-budget comparison identifies a shallow design that outperforms the tested deeper and charge-sector Haar-random benchmarks at the prespecified operating point. A separate compilation resolves every nontrivial recovery branch into abstract nearest-neighbor number-conserving gates. Although the present low-rate design does not yet improve fixed-total-memory throughput, it establishes a blueprint for converting spare memory capacity into protection of astronomical coherence, opening a path toward higher-rate, erasure-resilient quantum telescope architectures.
