US 11,888,978 B1
Systems and methods for measurement-device-independent quantum key distribution
Jing Wang, Broomfield, CO (US); and Bernardo Huberman, Palo Alto, CA (US)
Assigned to CABLE TELEVISION LABORATORIES, INC., Louisville, CO (US)
Filed by CABLE TELEVISION LABORATORIES, INC., Louisville, CO (US)
Filed on Jun. 8, 2021, as Appl. No. 17/342,151.
Claims priority of provisional application 63/055,493, filed on Jul. 23, 2020.
Claims priority of provisional application 63/036,015, filed on Jun. 8, 2020.
Int. Cl. H04L 9/08 (2006.01); G06N 10/00 (2022.01); H04B 10/85 (2013.01); G06F 1/10 (2006.01); H04J 14/02 (2006.01)
CPC H04L 9/0852 (2013.01) [G06F 1/105 (2013.01); G06N 10/00 (2019.01); H04B 10/85 (2013.01); H04J 14/02 (2013.01); H04L 9/0819 (2013.01)] 27 Claims
OG exemplary drawing
 
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.