论文标题
热状态下的量子保密III
Quantum Secrecy in Thermal States III
论文作者
论文摘要
在本文中，我们将使用热状态的中央广播协议的安全性扩展到了窃听器控制源的情况下。连续可变的中央广播方案中的量子保密是由汉伯里·布朗（Hanbury Brown）和Twiss效应引起的热状态下的量子相关性保证的。这项工作允许一种钥匙交换的方法，在该方法中，只要两者都可以检测到相同的来源并且它们在源的空间相干长度范围内，则可以同意钥匙。这很重要，因为它允许仅在现有基础架构上进行最小更改的量子安全键交换。
In this paper we expanded the security of a central broadcast protocol using thermal states to the case in which the eavesdropper controls the source. Quantum secrecy in a continuous variable central broadcast scheme is guaranteed by the quantum correlations present in thermal states arising from the Hanbury Brown and Twiss effect. This work allows for a method of key exchange in which two parties can agree a key as long as both can detect the same source and they are within the spatial coherence length of the source. This is important because it allows quantum secure key exchange with only minimal changes to existing infrastructure.
