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首页> 外文期刊>International journal of communication systems >Diversity space of multicarrier continuous‐variable quantum key distribution
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Diversity space of multicarrier continuous‐variable quantum key distribution

机译：多载波连续变量量子密钥分布的多样性空间

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摘要

The diversity space of multicarrier continuous-variable quantum key distribution (CVQKD) is defined. The diversity space utilizes the resources that are injected into the transmission by the additional degrees of freedom of the multicarrier modulation. We prove that the exploitable extra degree of freedom in a multicarrier CVQKD scenario significantly extends the possibilities of single-carrier CVQKD. The manifold extraction allows for the parties to reach decreased error probabilities by utilizing those extra resources of a multicarrier transmission that are not available in a single-carrier CVQKD setting. We define the multidimensional manifold space of multicarrier CVQKD and the optimal tradeoff between the available degrees of freedom of the multicarrier transmission. We extend the manifold extraction for the multiple-access AMQD-MQA (multiuser quadrature allocation) multicarrier protocol. The additional resources of multicarrier CVQKD allow the achievement of significant performance improvements that are particularly crucial in an experimental scenario.
机译：定义了多载波连续变量量子密钥分布（CVQKD）的分集空间。多样性空间利用通过多载波调制的额外自由度注入传输的资源。我们证明，多载波CVQKD情景中的可利用额外的自由度显着扩展了单载体CVQKD的可能性。歧管提取允许各方通过利用单载波CVQKD设置中不可用的多载波传输的额外资源来达到减少的误差概率。我们定义多载波CVQKD的多维歧管空间以及多载波传输的可用自由度之间的最佳权衡。我们扩展了多访问AMQD-MQA（多用户正交分配）多载波协议的歧管提取。多载波CVQKD的额外资源允许在实验情况下实现显着的性能改进，特别是在实验情况中特别关键。

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