论文标题
通过光相共轭完全自动增强高维量子加密
Fully autocompensating high-dimensional quantum cryptography by optical phase conjugation
论文作者
论文摘要
我们提出了一个基于光相结合的双向量子通信系统，用于实现完全自动补偿的高维量子加密术。我们证明，在爱丽丝和鲍勃之间单程往返后，由SU（2n）转换所描述的2N空间和极化光学模式之间的随机相移和耦合。 Bob可以使用单个光子的来源或相干状态，然后爱丽丝将其衰减至单个光子水平，因此，对于高维QKD协议，生成了非扰动的1 Qudit状态，作为BB84，将其作为较高的安全性。
We present a bidirectional quantum communication system based on optical phase conjugation for achieving fully autocompensating high-dimensional quantum cryptography. We prove that random phase shifts and couplings among 2N spatial and polarization optical modes described by SU(2N) transformations due to perturbations are autocompensated after a single round trip between Alice and Bob. Bob can use a source of single photons or, alternatively, coherent states and then Alice attenuates them up to a single photon level, and thus non-perturbated 1-qudit states are generated for high-dimensional QKD protocols, as the BB84 one, of a higher security.
