Device and method for use in quantum crytography
US7400724B2 · kind B2 · utility
3Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2002 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Jan 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0852
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a quantum cryptography system for the secure key generation, especially with signal sources and analysis channels. The signal sources are arranged spatially separated in such a manner that the wave fronts of light signals emitted by them superimpose partially at the input of the quantum channel. The analysis channels are arranged in such a manner that the wave front of the light signals coming from the quantum channel are split up spatially and at least two of the parts are analyzed in a quantum mechanical state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.