利用相干偏振态进行自由空间量子密钥分发的可行性
量子物理
2009-05-04 v2 大气与海洋物理
光学
摘要
我们首次证明了在真实大气条件下使用连续变量进行自由空间量子密钥分发的可行性。更具体地说，我们在研究所建筑的屋顶上通过 100m 的自由空间信道传输了相干偏振态。在我们的方案中，信号和本振光结合在单一空间模式中，这自动补偿了大气涨落并产生了优异的干涉。此外，本振光充当空间和光谱滤波器，从而允许不受限制的日间操作。
关键词
引用
@article{arxiv.0811.4756,
title = {Feasibility of free space quantum key distribution with coherent polarization states},
author = {D. Elser and T. Bartley and B. Heim and Ch. Wittmann and D. Sych and G. Leuchs},
journal= {arXiv preprint arXiv:0811.4756},
year = {2009}
}
备注
12 pages, 8 figures, extensions in sections 2, 3.1, 3.2 and 4. This is an author-created, un-copyedited version of an article accepted for publication in New Journal of Physics (Special Issue on Quantum Cryptography: Theory and Practice). IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it