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Efficient High-Dimensional Quantum Key Distribution with Hybrid Encoding

机译:混合编码的高效高维量子密钥分配

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We propose a schematic setup of quantum key distribution (QKD) with an improved secret key rate based on high-dimensional quantum states. Two degrees-of-freedom of a single photon, orbital angular momentum modes, and multi-path modes, are used to encode secret key information. Its practical implementation consists of optical elements that are within the reach of current technologies such as a multiport interferometer. We show that the proposed feasible protocol has improved the secret key rate with much sophistication compared to the previous 2-dimensional protocol known as the detector-device-independent QKD.
机译:我们提出了一种基于高维量子态的具有改进的秘密密钥率的量子密钥分布(QKD)的示意图设置。单个光子的两个自由度,轨道角动量模式和多路径模式用于编码密钥信息。它的实际实现由光学技术组成,这些技术在多端口干涉仪等当前技术的范围内。我们表明,与先前的二维协议(称为检测器独立于设备的QKD)相比,所提出的可行协议以更高的复杂度提高了秘密密钥率。

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