论文标题
基于高斯州的量子照明，简单的光进行
Gaussian State-Based Quantum Illumination with Simple Photodetection
论文作者
论文摘要
成像或检测量子照明下对象可用的量子优势的证明可以依赖于最佳测量值，而无需指定其是什么。我们使用连续变量的高斯量子信息形式主义，以表明与平均光子数的连贯状态相比，量子照明更适合对象检测，即使对于简单的直接光检测也是如此。如果信号能量和物体反射率较低并且背景热噪声高，则优势持续存在。如果我们匹配信号梁检测概率而不是平均光子数，那么优势就更大。我们以热状态进行所有计算，即使对于具有负能力性负函数的非高斯条件状态。我们使用蒙特卡洛工艺模拟重复检测，该过程清楚地显示了可获得的优势。
Proofs of the quantum advantage available in imaging or detecting objects under quantum illumination can rely on optimal measurements without specifying what they are. We use the continuous-variable Gaussian quantum information formalism to show that quantum illumination is better for object detection compared with coherent states of the same mean photon number, even for simple direct photodetection. The advantage persists if signal energy and object reflectivity are low and background thermal noise is high. The advantage is even greater if we match signal beam detection probabilities rather than mean photon number. We perform all calculations with thermal states, even for non-Gaussian conditioned states with negative Wigner functions. We simulate repeated detection using a Monte Carlo process that clearly shows the advantages obtainable.
