Reduced randomness in quantum cryptography with sequences of qubits encoded in the same basis
量子物理
2007-05-23 v1
摘要
We consider the cloning of sequences of qubits prepared in the states used in the BB84 or 6-state quantum cryptography protocol, and show that the single-qubit fidelity is unaffected even if entire sequences of qubits are prepared in the same basis. This result is of great importance for practical quantum cryptosystems because it reduces the need for high-speed random number generation without impairing on the security against finite-size attacks.
引用
@article{arxiv.quant-ph/0507058,
title = {Reduced randomness in quantum cryptography with sequences of qubits encoded in the same basis},
author = {L. -P. Lamoureux and H. Bechmann-Pasquinucci and N. J. Cerf and N. Gisin and C. Macchiavello},
journal= {arXiv preprint arXiv:quant-ph/0507058},
year = {2007}
}
备注
8 pages, submitted to PRA