System for making available an epr quantum channel

A system for making available an EPR quantum channel, comprising:

• an entangled-photon emitter comprising a source configured to generate at least one pair of entangled photons comprising a first photon emitted on a first propagation path and, simultaneously, a second photon emitted on a second propagation path different from the first propagation path,
• a first receiver positioned on the first propagation path, comprising:
• at least one qubit storage unit designed to store the qubit carried by the photon received by the first receiver,
• a photon switch designed to send the photon received by the first receiver to said storage unit,
• a photon passage detector configured to control the photon switch and record the time of reception of the photon by the first receiver,
• a second receiver positioned on the second propagation path so as to be reached by the second photon, said second receiver comprising:
• at least one qubit storage unit designed to store the qubit carried by the photon received by the second receiver,
• a photon switch designed to send the photon received by the second receiver to said storage unit,
• a photon passage detector configured to control the photon switch and record the time of reception of the photon by the second receiver,
• at least one information processor contained in the first and/or second receiver, for example an electronic microprocessor, designed to control the photon switch of said receiver,
• a communication system linking the two receivers together, said communication system being designed in particular to communicate, to said information processor, the times of reception of the photons at the first and second receiver, in order to determine the pairs of entangled photons whose two photons have each reached the receiver to which they were sent.