论文标题
量子照明的嘈杂接收器
Noisy receivers for quantum illumination
论文作者
论文摘要
量子照明（QI）承诺在目标检测中前所未有的表现，但其实施存在各种问题。如果目标范围是一个问题，则信号和怠速重组构成了协议成功的关键障碍。如果在惰轮模式上进行测量仍然可以产生量子优势，则可能会减轻这种情况。在本文中，我们研究了一般相关的高斯源的Qi方案，并研究相结合（PC）接收器，以信号和惰轮的及其交叉相关性来得出相关的SNR，可以很容易地适应由于高斯测量值而引起的添加噪声。我们确认在惰轮模式下进行的杂尼测量导致了一个渐近态与同基检测的连贯状态的性能。但是，如果信号模式受到杂项的影响，但是惰轮模式保持清洁，则性能渐近地接近PC接收器的情况，而没有任何添加噪声。
Quantum illumination (QI) promises unprecedented performances in target detection but there are various problems surrounding its implementation. Where target ranging is a concern, signal and idler recombination forms a crucial barrier to the protocol's success. This could potentially be mitigated if performing a measurement on the idler mode could still yield a quantum advantage. In this paper we investigate the QI protocol for a generically correlated Gaussian source and study the phase-conjugating (PC) receiver, deriving the associated SNR in terms of the signal and idler energies, and their cross-correlations, which may be readily adapted to incorporate added noise due to Gaussian measurements. We confirm that a heterodyne measurement performed on the idler mode leads to a performance which asymptotically approaches that of a coherent state with homodyne detection. However, if the signal mode is affected by heterodyne but the idler mode is maintained clean, the performance asymptotically approaches that of the PC receiver without any added noise.
