The detection and discrimination of quantum states serve a crucial role in quantum signal processing, a discipline that studies methods and techniques to process signals that obey the quantum mechanics frameworks. However, just like classical detection, evasive behaviors also exist in quantum detection. In this paper, we formulate an adversarial quantum detection scenario where the detector is passive and does not know the quantum states have been distorted by an attacker. We compare the performance of a passive detector with the one of a non-adversarial detector to demonstrate how evasive behaviors can undermine the performance of quantum detection. We use a case study of target detection with quantum radars to corroborate our analytical results.

翻译：量子态的检测与区分在量子信号处理中扮演着关键角色。量子信号处理研究的是遵循量子力学框架的信号处理方法与技术。然而，与经典检测类似，量子检测中同样存在规避行为。本文构建了一个对抗性量子检测场景，其中检测器是被动的，且未知量子态已被攻击者篡改。通过比较被动检测器与非对抗性检测器的性能差异，我们揭示了规避行为如何削弱量子检测的性能。最后，以量子雷达目标检测为例验证了我们的分析结果。