Patent ID: 11888978
Assignee: CABLE TELEVISION LABORATORIES, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A node for a measurement-device-independent quantum key distribution network, comprising:
a laser diode configured to emit a sequence of optical pulses;
a qubit encoder configured to encode a logical qubit in each of the optical pulses to create a sequence of photonic qubits;
an injection-locking circulator configured to forward couple the sequence of optical pulses from the laser diode to the qubit encoder; and
a calibrator configured to couple a wavelength-calibration signal from a hub of the quantum key distribution network to the injection-locking circulator such that the injection-locking circulator reverse couples the wavelength-calibration signal into the laser diode to injection-lock the laser diode.