论文标题
多模式CV-QKD，无噪音衰减和扩增
Multi-mode CV-QKD with Noiseless Attenuation and Amplification
论文作者
论文摘要
在这项工作中，我们研究了无噪声衰减和无噪声放大的使用，从卫星到地面通道上的多模式连续变量（CV）量子密钥分布（QKD）。我们提出了改进的多模式CV-QKD协议，该协议分别在发射机和接收器上分别应用了无噪声衰减和无噪声放大操作。我们的结果表明，与单模CV-QKD一致，在接收器上应用时，无噪声的放大操作可以增加传输距离和多模式CV-QKD的通道噪声公差。与单模CV-QKD不同，在多模式CV-QKD中，可以通过在发射器上添加无噪声衰减来进一步增强无噪声放大的关键率提高。
In this work we study the use of noiseless attenuation and noiseless amplification, in terms of multi-mode Continuous-Variable (CV) Quantum Key Distribution (QKD) over satellite-to-ground channels. We propose an improved multi-mode CV-QKD protocol where noiseless attenuation and noiseless amplification operations are applied at the transmitter and the receiver, respectively. Our results show that consistent with single-mode CV-QKD, the noiseless amplification operation, when applied at the receiver, can increase the transmission distance and the channel noise tolerance of multi-mode CV-QKD. Different from single-mode CV-QKD, in multi-mode CV-QKD the key rate improvement offered by noiseless amplification can be further enhanced by adding noiseless attenuation at the transmitter.
