发表机构
ITMO University; Leading Research Center ‘National Center of Quantum Internet’, ITMO University; Quanttelecom LLC.（ITMO大学; ITMO大学领先研究中心‘国家量子互联网中心’; Quanttelecom有限责任公司）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文理论研究了DWDM光传输网络中SCW QKD的性能，考虑拉曼散射、四波混频等噪声，计算了QBER和安全密钥率，发现1310 nm波长优于C波段。
AI 中文摘要
本文研究了在利用密集波分复用（DWDM）的光传输网络经典信道存在的情况下，副载波量子密钥分发（SCW QKD）的性能。我们考虑了自发拉曼散射噪声、四波混频以及信道隔离效率的影响。我们针对DWDM系统的不同参数和量子信道分配，计算了SCW-QKD协议的量子比特错误率以及安全密钥生成率。我们的计算表明，尽管光纤在1310 nm波长处具有更大的衰减，但由于非线性噪声较低，在该波长分配量子信道比在C波段分配更为可取。
英文摘要
In this paper we study the performance of subcarrier-wave quantum key distribution (SCW QKD) in the presence of classical channels of optical transport network utilizing dense wavelength division multiplexing (DWDM). We consider the impact of spontaneous Raman scattering noise as well as the four-wave mixing and channel isolation efficiency. We calculate quantum bit error rate as well as the secure key generation rate of SCW-QKD protocol for different parameters of DWDM system and quantum channel allocations. Our calculations show, that quantum channel allocation at the wavelength of 1310 nm is preferable to allocation at C-band due to lower nonlinear noise, despite fiber's larger attenuation at this wavelength.
Comments18 pages, 7 figures
Journal refJ. Phys. B: At. Mol. Opt. Phys. 54 (2021) 135502
