Quantum key distribution involving moveable key device
US8755525B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2009 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | May 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0861
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of key distribution from a first entity to a second entity including the first entity communicating with a moveable key device so as to share a secret data with said moveable key device, relocating said moveable key device to a location having a quantum link with said second entity, transmitting a quantum signal from said moveable key device to said second entity on said quantum link, the quantum signal being based on said secret data; and said first entity and said second entity undertaking key agreement based on the quantum signal received by the second entity. Such a method allows the principles of quantum key distribution to be applied even in the absence of a suitable quantum communications link between the first and second entities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.