基于时间-bin纠缠的射频场动态分布式量子传感
Dynamic distributed quantum sensing of radio-frequency fields via time-bin entanglement
- Technergetics LLC（Technergetics有限责任公司）
- Booz Allen Hamilton（博思艾伦咨询公司）
- Murray Associates of Utica（尤蒂卡穆雷协会）
- Air Force Research Laboratory（空军研究实验室）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
提出基于时间-bin纠缠的分布式量子传感框架，利用时间结构实现动态RF场传感，相比静态偏振编码提升6 dB灵敏度，并保持纠缠优势，经蒙特卡洛模拟验证。
AI中文摘要：
我们提出了一种新颖的离散变量（DV）分布式量子传感框架，其中传统的基于偏振的探针被时间-bin纠缠量子比特所取代。我们展示了时间-bin贝尔态的内在时间结构可以被用作一种可调谐的、内置的双时间差分采样参考，用于传感射频（RF）场。与现有的基于偏振贝尔态的协议（仅限于静态测量）不同，我们提出的架构能够将动态RF相位信号相干映射到静态量子光学相位上。通过将时间-bin间隔与RF或中频（IF）半周期（对跖采样）匹配，我们在理论上证明了我们的协议相比单样本静态偏振编码提供了6 dB的灵敏度提升，同时相对于可分离标准量子极限基准保持了每对3 dB的纠缠优势。性能提升通过蒙特卡洛模拟得到验证。该方法为DV光子量子网络中的RF传感提供了解决方案，为量子增强和频率敏捷的分布式传感器阵列以及更广泛利用时域量子探针编码提供了清晰路径。
英文摘要：
We propose a novel framework for discrete-variable (DV) distributed quantum sensing, wherein traditional polarization-based probes are replaced with time-bin entangled qubits. We show that the intrinsic temporal structure of time-bin Bell states can be utilized as a tunable, built-in two-time differential sampling reference for sensing radio-frequency (RF) fields. Unlike existing protocols based on polarization Bell states, which are limited to static measurements, our proposed architecture enables the coherent mapping of dynamic RF phase signals onto static quantum optical phases. By matching the time-bin separation to the RF or intermediate frequency (IF) half-period (antipodal sampling), we theoretically demonstrate that our protocol provides a 6 dB sensitivity enhancement over one-sample static polarization encodings while preserving the 3 dB per-pair entanglement advantage over the separable standard quantum limit benchmark. The performance enhancement is validated with Monte Carlo simulations. This approach provides a solution for RF sensing in DV photonic quantum networks, offering a clear path toward quantum-enhanced and frequency-agile distributed sensor arrays and broader utilization of time-domain quantum probe encodings.
