论文标题
超疏调增强的量子照明
Hyperentanglement-enhanced quantum illumination
论文作者
论文摘要
在量子照明中，与惰性模式纠结的信号模式朝着以热噪声沐浴的可疑物体派遣，并测量返回模式以及存储的惰轮模式，以确定对象的存在或不存在。在此过程中，纠缠被摧毁，但其益处以经典相关性的形式和扩大的希尔伯特（Hilbert）空间生存。在这里，我们提出了以两个自由度的探针状态超座位 - 极化和频率，以在低噪声状态下的最佳已知量子照明程序上实现显着的12dB性能指数的显着提高。我们使用四个光学参数放大器（OPA）提出了一个简单的接收器模型，该模型利用探针状态中的超室内距离，以匹配高噪声状态下的前馈和频率频率生成器（FF-SFG）接收器的性能。通过用FF-SFG接收器替换提出的模型中的每个OPA，可以看到孤独的FF-SFG接收器性能的进一步改善。
In quantum illumination, the signal mode of light, entangled with an idler mode, is dispatched towards a suspected object bathed in thermal noise and the returning mode, along with the stored idler mode, is measured to determine the presence or absence of the object. In this process, entanglement is destroyed but its benefits in the form of classical correlations and enlarged Hilbert space survive. Here, we propose the use of probe state hyperentangled in two degrees of freedom - polarization and frequency, to achieve a significant 12dB performance improvement in error probability exponent over the best known quantum illumination procedure in the low noise regime. We present a simple receiver model using four optical parametric amplifiers (OPA) that exploits hyperentanglement in the probe state to match the performance of the feed-forward sum-frequency generator (FF-SFG) receiver in the high noise regime. By replacing each OPA in the proposed model with a FF-SFG receiver, further 3dB improvement in the performance of a lone FF-SFG receiver can be seen.
