论文标题
使用几乎无纳维相关扩增的一个每个位接收器
One photon-per-bit receiver using near-noiseless phase-sensitive amplification
论文作者
论文摘要
噪声从根本上限制了所有通信链接的能力和触及。在光学空间通信中，噪声主要源于检测过程，并限制了信号保真度。 。因此，接收器敏感性起着关键作用，决定了恢复传输信息所需的最小功率。使用脉冲位置调制格式对接收器带宽和数据率进行广泛探索的方法。在这里，我们报告了一种基于在室温下运行的几乎无差异相敏感的前放大前相干接收器的新颖，频谱效率的方法，并以10 GB/s的数据速率证明了一个每位入射功率的灵敏度。结果为未来的大容量间卫星和深空的途径提供了一条途径，以及其他自由空间沟通链接
Noise fundamentally limits the capacity and reach in all communication links. In optical space communications, noise primarily originates from the detection process and limits the signal fidelity. . Therefore, the receiver sensitivity plays a key role, dictating the minimum power needed to recover the information transmitted. The widely explored approach of using the pulse-position modulation format trades-off sensitivity against receiver bandwidth and thus data-rate. Here we report on a novel, spectrally efficient, approach based on a coherent receiver with a near-noiseless phase-sensitive pre-amplifier operating at room temperature and demonstrate a sensitivity of one photon-per-bit of incident power at a data rate of 10 Gb/s. The results provide a path to future high-capacity inter-satellite and deep space, and other free-space communication links
