IMPROVEMENTS TO QKD NETWORK ARCHITECTURES
Patent Information
- Application Number
- DE602020050775
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-03-22
- Filing Date
- 2020-03-11
- Publication Date
- 2025-05-07
- Estimated Expiration
- 2040-03-11
AI Technical Summary
Existing Quantum Key Distribution (QKD) systems with a single transmitter and multiple receivers face challenges in ensuring all receivers receive a sufficiently high pulse rate, especially when one receiver needs to generate more keys or is located further away, leading to potential disconnection and time-consuming re-initiation processes.
The system employs an optical switch and splitter configuration that allows a high-power pulse stream to be directed to a receiver with high key generation needs while continuously providing other receivers with a sufficient pulse stream, using a 10/90 split ratio for the splitter and 50/50 combining ratio for the combiners to ensure continuous photon streams to all receivers.
This configuration ensures continuous and secure communication links between the transmitter and all receivers, avoiding the need for time-consuming re-initiation procedures and accommodating varying key generation demands across receivers.