论文标题
使用双同伴检测的量子照明接收器
Quantum illumination receiver using double homodyne detection
论文作者
论文摘要
量子接收器是量子照明（QI）的重要元素，它的表现优于其经典对应物，称为经典弹片（CI）。但是，只有很少有可实现的量子接收器的建议，这利用了非线性效应，从而增加了接收器设置的复杂性。为了补偿这一点，在本文中，我们设计了一个带有线性光学元件的量子接收器，用于高斯气。我们的接收器不是利用非线性效应，而是由50:50的束分配器和同伴检测组成。在50:50梁分离器后使用双重同源物检测，我们分析了目标反射率，源功能和噪声水平的不同机制中的气质性能。我们表明，与现有简单结构的接收器相比，我们的接收器具有更好的信噪比，并且在噪声方面具有更好的噪声。
A quantum receiver is an essential element of quantum illumination (QI) which outperforms its classical counterpart, called classical-illumination (CI). However, there are only few proposals for realizable quantum receiver, which exploits nonlinear effects leading to increasing the complexity of receiver setups. To compensate this, in this article, we design a quantum receiver with linear optical elements for Gaussian QI. Rather than exploiting nonlinear effect, our receiver consists of a 50:50 beam splitter and homodyne detection. Using double homodyne detection after the 50:50 beam splitter, we analyze the performance of the QI in different regimes of target reflectivity, source power, and noise level. We show that our receiver has better signal-to-noise ratio and more robust against noise than the existing simple-structured receivers.
