Patent · US Active

To QKD network architectures

US12250298B2 · kind B2 · utility

0Cited by

4References

12Claims

0Family size

Assignee

BRITISH TELECOMMUNICATIONS public limited company · GB

Inventor

Andrew Lord · London, GB

Key dates

Filing date	Mar 11, 2020
Grant date	Mar 11, 2025
Priority date	—
Expiry date	Jan 21, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0855
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A system of transmitting optical pulses from a transmitter to first and second receivers for the purposes of quantum key distribution is disclosed. The system can include a transmitter configured to transmit a plurality of optical pulses; first and second receivers configured to receive some or all of the plurality of optical pulses; a guide for guiding the plurality of optical pulses, the guide having first and second output ports, the first output port being in optical communication with the first receiver and the second output port being in optical communication with the second receiver, the guide being configured to output a proportion of the optical pulses at the first output port and a proportion of the optical pulses at the second output port, modification means for modifying the guide so as to change the proportion of the optical pulses output at the first output port.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.