Fully Passive Quantum Key Distribution,Physical Review Letters

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Fully Passive Quantum Key Distribution
Physical Review Letters ( IF 8.1 ) Pub Date : 2023-05-31 , DOI: 10.1103/physrevlett.130.220801
Wenyuan Wang ₁ , Rong Wang ₁ , Chengqiu Hu ₁ , Victor Zapatero _{2,

3,

4} , Li Qian _{5,

6} , Bing Qi ₇ , Marcos Curty _{2,

3,

4} , Hoi-Kwong Lo _{1,

5,

6,

8,

9}

Affiliation

We propose a fully passive linear optical quantum key distribution (QKD) source that implements both random decoy-state and encoding choices with postselection only, thus eliminating all side channels in active modulators. Our source is general purpose and can be used in, e.g., BB84, the six-state protocol, and reference-frame-independent QKD. It can even potentially be combined with measurement-device-independent QKD to achieve robustness against side channels in both detectors and modulators. We also perform a proof-of-principle experimentalsource characterization to show its feasibility.

中文翻译：

全被动量子密钥分发

我们提出了一种完全无源的线性光量子密钥分发 (QKD) 源，它仅通过后选择实现随机诱饵状态和编码选择，从而消除了有源调制器中的所有侧信道。我们的来源是通用的，可用于例如 BB84、六态协议和独立于参考框架的 QKD。它甚至可以与独立于测量设备的 QKD 相结合，以在检测器和调制器中实现对侧信道的鲁棒性。我们还进行了原理验证实验源表征，以证明其可行性。

更新日期：2023-06-01

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