Modern communication strives towards provably secure systems which can be widely deployed. Quantum key distribution provides a methodology to verify the integrity and security of a key exchange based on physical laws. However, physical systems often fall short of theoretical models, meaning they can be compromised through uncharacterized side-channels. The complexity of detection means that the measurement system is a vulnerable target for an adversary. Here, we present secure key exchange up to 200 km while removing all side-channels from the measurement system. We use mass-manufacturable, monolithically integrated transmitters that represent an accessible, quantum-ready communication platform. This work demonstrates a network topology that allows secure equipment sharing which is accessible with a cost-effective transmitter, significantly reducing the barrier for widespread uptake of quantum-secured communication.

中文翻译：

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基于芯片的与测量设备无关的量子密钥分配

现代通信致力于开发可广泛部署的可证明安全的系统。量子密钥分发提供了一种基于物理定律来验证密钥交换的完整性和安全性的方法。但是，物理系统通常缺乏理论模型，这意味着它们可能会因未表征的旁通道而受到损害。检测的复杂性意味着测量系统是对手的脆弱目标。在这里，我们提出了长达200公里的安全密钥交换，同时从测量系统中删除了所有侧信道。我们使用可量产的，单片集成的发射器，这些发射器代表了可访问的，量子就绪的通信平台。这项工作演示了一种网络拓扑结构，该拓扑结构允许安全的设备共享，并且可以通过具有成本效益的发射器进行访问，