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arXiv 2109.01009quant-phphysics.optics
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非对称假设检验背景下相干态量子目标探测性能

Performance of coherent-state quantum target detection in the context of asymmetric hypothesis testing

Gaetana Spedalieri, Stefano Pirandola

摘要:

由于实现联合测量的困难,基于信号-空闲纠缠的量子照明方案在实际中很难实现。出于这个原因,人们可以考虑量子激光雷达/雷达的量子灵感设计,其中输入源是半经典(相干态),同时保留检测的量子方面。这些设计的性能可以在非对称假设检验的背景下通过求助于量子斯坦引理来研究。然而,在这里我们讨论的是,对于典型的有限尺寸区域,与这种方法相关的二阶和三阶展开不足以证明量子优势。

英文摘要:

Due to the difficulties of implementing joint measurements, quantum illumination schemes that are based on signal-idler entanglement are difficult to implement in practice. For this reason, one may consider quantum-inspired designs of quantum lidar/radar where the input sources are semiclassical (coherent states) while retaining the quantum aspects of the detection. The performance of these designs could be studied in the context of asymmetric hypothesis testing by resorting to the quantum Stein's lemma. However, here we discuss that, for typical finite-size regimes, the second- and third-order expansions associated with this approach are not sufficient to prove quantum advantage.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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