Quantum key distribution with higher-order alphabets using spatially-encoded qudits
量子物理
2009-11-11 v2
摘要
We propose and demonstrate a quantum key distribution scheme in higher-order -dimensional alphabets using spatial degrees of freedom of photons. Our implementation allows for the transmission of 4.56 bits per sifted photon, while providing improved security: an intercept-resend attack on all photons would induce an error rate of 0.47. Using our system, it should be possible to send more than a byte of information per sifted photon.
引用
@article{arxiv.quant-ph/0510088,
title = {Quantum key distribution with higher-order alphabets using spatially-encoded qudits},
author = {S. P. Walborn and D. S. Lemelle and M. P. Almeida and P. H. Souto Ribeiro},
journal= {arXiv preprint arXiv:quant-ph/0510088},
year = {2009}
}
备注
4 pages, 5 figures. Replaced with published version