Quantum cipher communication system
US7707402B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2002 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Oct 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0852
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A quantum-cryptographic communication system for quantum-cryptographic communication in an optical network, including a transmitter for transmitting a packet signal having a light pulse train representing an address and a single photon pulse train for quantum cryptography, and a router including a header analyzer for extracting the address information from the light pulse train of the packet signal and a gate switch for selecting one of the optical fibers. The router routes the packet signal by selecting an optical fiber used for the next transmission path according to the extracted address information by the header analyzer and by switching the path to the selected optical fiber by the gate switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.