Quantum communication network

摘要

A quantum communication system comprising a receiver and a plurality of transmitters, said receiver comprising a detector sub-system, each of said transmitters being configured to emit pulses of radiation, said detector subsystem comprising at least one detector, said detector being configured to detect said light pulses, the system comprising a timing control module, said timing control module being configured to control the number of light pulses received by the detector sub-system, such that just one light pulse from one transmitter reaches the detector sub-system at any one time, the timing control module also allowing the transmitter which sent said pulse to be identified.

主权项

1. A communication system comprising:
a receiver and a plurality of transmitters, said transmitters being configured to transmit information by encoded single quanta, said receiver comprising a detector sub-system, each of said transmitters being configured to emit light pulses of radiation, said detector subsystem comprising at least one detector, said detector being configured to detect said light pulses, the receiver further comprising a timing control module, configured to provide a clock signal to synchronize a first control element at each transmitter with the receiver, the timing control module being further configured to control the number of light pulses received by the detector sub-system according to the clock signal, such that just one light pulse from one transmitter reaches the detector sub-system at any one time, wherein the clock signal provides a time reference for light pulse arrivals, allowing the transmitter which sent said light pulse to be identified, said receiver further comprising a feedback control unit configured to generate a feedback signal for each transmitter, the receiver being configured to transmit the feedback signal to each transmitter, wherein the first or another control element at each transmitter is configured to be controlled by the feedback signal from said receiver to actively stabilize a physical parameter.