US 12,407,421 B2
Systems and methods for quantum communication
Nitzan Livneh, Mevasseret Zion (IL); and Hagai Shmuel Eisenberg, Jerusalem (IL)
Assigned to QUANT L R LTD., Jerusalem (IL)
Appl. No. 18/014,191
Filed by QUANT L R LTD., Jerusalem (IL)
PCT Filed Jul. 2, 2021, PCT No. PCT/IL2021/050822
§ 371(c)(1), (2) Date Jan. 3, 2023,
PCT Pub. No. WO2022/003704, PCT Pub. Date Jan. 6, 2022.
Claims priority of provisional application 63/047,521, filed on Jul. 2, 2020.
Prior Publication US 2023/0261761 A1, Aug. 17, 2023
Int. Cl. H04B 10/70 (2013.01); H04L 9/08 (2006.01)
CPC H04B 10/70 (2013.01) [H04L 9/0852 (2013.01)] 32 Claims
OG exemplary drawing
 
1. A quantum-communication transmitter system comprising:
a light source configured to generate coherent light;
a Mach-Zehnder modulator optically coupled to said light source and configured to simultaneously modulate phase and amplitude of the coherent light generated by said light source; and
a driving unit electrically coupled to said Mach-Zehnder modulator and configured to apply electric modulating voltage signals to one single modulating input driving said Mach-Zehnder modulator, to thereby cause said Mach-Zehnder modulator to generate phase and amplitude modulated coherent light pulses for implementing a four quantum states time-bin encoding scheme for qubits transmission over a quantum communication channel.