标题： 具有实验不完善的量子启发系外行星检测 显示英文标题

标题： Quantum-inspired exoplanet detection in the presence of experimental imperfections

摘要： 理想的空分复用（SPADE）已被证明是系外行星探测的量子最优工具，即不对称光源的区分。 然而，最近对分离估计和对称光源区分相关问题的研究表明，在存在噪声的情况下，其效率受到限制。 在本工作中，我们使用分析工具来仔细研究SPADE的实际适用性，并推导出在存在实验不完善情况下的相关最佳决策策略，用于系外行星探测。 一方面，我们发现带有噪声的SPADE的检测概率与行星-恒星分离度和相对亮度的缩放关系与传统技术（如直接成像和日冕仪）相同。 另一方面，我们证明由于在现实噪声条件下具有更优的缩放系数，SPADE在亚瑞利区域仍为实际系外行星探测最有效的方法。 显示英文摘要

摘要： Ideal spatial demultiplexing (SPADE) is proven to be a quantum-optimal tool for exoplanet detection, i.e., asymmetric source discrimination. However, recent investigations into the related problems of separation estimation and symmetric source discrimination showed its efficiency to be limited in the presence of noise. In this work, we use analytical tools to scrutinize the practical applicability of SPADE and derive the associated optimal decision strategy for exoplanet detection in the presence of experimental imperfections. On the one hand, we find that the probability of detection of noisy SPADE has the same scaling with planet-star separation and relative brightness as conventional techniques, such as direct imaging and coronagraphs. On the other hand, we prove that, due to a superior scaling coefficient under realistic noise conditions, SPADE remains the most efficient method for practical exoplanet detection in the sub-Rayleigh regime.