Can quantum cryptography imply quantum mechanics? Reply to Smolin

Reply to Comment: Quantum Cryptography Based on Orthogonal States?

This is our Reply to Peres' Comment [quant-ph/9509003] to "Quantum Cryptography Based on Orthogonal States" [Phys. Rev. Lett. 75, 1239 (1995)].

Reply to "Avoiding the Detector Blinding Attack on Quantum Cryptography"

This is a reply to the comment by Yuan et al. [arXiv:1009.6130v1] on our publication [arXiv:1008.4593].

Reply to "Comment on `Resilience of gated avalanche photodiodes against bright illumination attacks in quantum cryptography'"

This is a Reply to the Comment by Lydersen et al. [arXiv: 1106.3756v1].

Reply to recent scepticism about the foundations of quantum cryptography

In a series of recent papers, Hirota and Yuen claim to have identified a fundamental flaw in the theory underlying quantum cryptography, which would invalidate existing security proofs. In this short note, we sketch their argument and show that their conclusion is unjustified --- it originates from a confusion between necessary and sufficient criteria for secrecy.

Reply to comment on Y-00 quantum secure communication protocol

In 2000, an attractive new quantum cryptography was discovered by H.P.Yuen, which can realize secure communication with high speeds and at long distance by conventional optical devices. Recently, a criticism of the Yuen protocol, so called Y-00, was made by Nishioka, and Imai group(Mitsubishi and University of Tokyo), and they claimed Y-00 is essentially a classical stream cipher. This paper shows that the claim is incorrect. In particular, it is shown that the relation $l_i=r_i\oplus \tilde{k}_i$, which is their basis for attack, has no essential role for any security analysis. In addition, w…

关于QKD的争论：对NSA反对意见的反驳

The debate over QKD: A rebuttal to the NSA's objections

本文反驳了NSA不建议使用量子密码学的结论，指出其部分反对观点缺乏正当理由，另一些问题虽存在但有望在未来解决。