Lopez Grande I H, Etcheverry S, Aldama J, Ghasemi S, Nolan D, Pruneri V
Opt Express. 2021 May 10;29(10):14815-14827. doi: 10.1364/OE.425382.
We present a versatile transmitter capable of performing both discrete variable and continuous variable quantum key distribution protocols (DV-QKD and CV-QKD, respectively). Using this transmitter, we implement a time-bin encoded BB84 DV-QKD protocol over a physical quantum channel of 47 km and a GG02 CV-QKD protocol with true local oscillator over a 10.5 km channel, achieving secret key rates of 4.1 kbps and 1 Mbps for DV- and CV-QKD, respectively. The reported transmitter scheme is particularly suitable for re-configurable optical networks where the QKD protocol is selected to optimize the performance according to the parameters of the links.
我们展示了一种多功能发射机，它能够执行离散变量和连续变量量子密钥分发协议（分别为DV-QKD和CV-QKD）。使用该发射机，我们在47公里的物理量子信道上实现了时间编码的BB84 DV-QKD协议，并在10.5公里的信道上实现了具有真本地振荡器的GG02 CV-QKD协议，DV-QKD和CV-QKD的密钥生成率分别达到了4.1 kbps和1 Mbps。所报道的发射机方案特别适用于可重构光网络，在这种网络中，可根据链路参数选择QKD协议以优化性能。
