Quantum Cryptography in Noisy Channels
| dc.creator | Lo, Hoi-Kwong | |
| dc.creator | Chau, H. F. | |
| dc.date | 1995-11-20 | |
| dc.date.accessioned | 2026-07-07T06:13:41Z | |
| dc.date.available | 2026-07-07T06:13:41Z | |
| dc.description | We provide a complete proof of the security of quantum cryptography against any eavesdropping attack including coherent measurements even in the presence of noise. Polarization-based cryptographic schemes are shown to be equivalent to EPR-based schemes. We also show that the performance of a noisy channel approaches that of a noiseless one as the error rate tends to zero. (i.e., the secrecy capacity $C_s (ε) \to C_s (0)$ as $ε\to 0$.) One implication of our results is that one can {\it double} the efficiency of a most well-known quantum cryptographic scheme proposed by Bennett and Brassard simply by assigning vastly different probabilities to the two conjugate bases. | |
| dc.description | 22 pages, REVTEX | |
| dc.identifier | https://arxiv.org/abs/quant-ph/9511025 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/9511025 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/93189 | |
| dc.subject | Quantum Physics | |
| dc.title | Quantum Cryptography in Noisy Channels | |
| dc.type | text |