Secure key distribution system based on quantum cryptography
Abstract
The secure transmission of cryptographic keys is demonstrated over a 10 km-long optical fibre channel using a technique called 'quantum cryptography'. Single-photon detector noise and nonideal modulator frequency response lead to error rates of approximately 6% in the transmitted keys that are corrected using publicly agreed key permutations and parity checks.
- Publication:
-
Electronics Letters
- Pub Date:
- May 1994
- DOI:
- 10.1049/el:19940558
- Bibcode:
- 1994ElL....30..809T
- Keywords:
-
- Channels (Data Transmission);
- Computer Information Security;
- Cryptography;
- Interferometry;
- Quantum Theory;
- Error Analysis;
- Frequency Response;
- Optical Communication;
- Parity;
- Signal Encoding;
- Communications and Radar