论文标题
在15 km多核光纤以上的连续可变量子键分布
Continuous-Variable Quantum Key Distribution over 15 km Multi-Core Fiber
论文作者
论文摘要
信息的安全传输对于数字世界的不断增长的需求至关重要。连续可变的量子密钥分布（CV-QKD）是一种可能为密码系统提供信息理论安全性的技术。 CV-QKD非常有吸引力，这要归功于大都市距离高的秘密关键利率产生并与当前的古典通信网络集成。在这里，我们在15 km多核光纤（MCF）上演示了CV-QKD，在那里我们利用一个核心使用Alice的发射器远程频率锁定Bob的本地振荡器。我们还通过将CV-QKD跨多个核心并行化，我们还证明了MCF的能力提高秘密密钥速率。我们的结果指出，MCFS对QKD系统的大都市部署有希望。
The secure transfer of information is critical for the ever-increasing demands of the digital world. Continuous-variable quantum key distribution (CV-QKD) is a technology that can potentially provide information-theoretic security to cryptographic systems. CV-QKD is highly attractive thanks to high secret key rate generation over metropolitan distances and integration with the current classical communication networks. Here we demonstrate CV-QKD across a 15 km multi-core fiber (MCF) where we take advantage of one core to remotely frequency lock Bob's local oscillator with Alice's transmitter. We also demonstrate the capacity of the MCF to boost the secret key rate by parallelizing CV-QKD across multiple cores. Our results point out that MCFs are promising for metropolitan deployment of QKD systems.
