Quant L R Ltd.

Heqa Security Ltd

Hagai Shmuel Eisenberg

Nitzan Livneh

Disclosed a quantum-communication transmitter system comprising a light source configured to generate coherent light, a Mach-Zehnder modulator optically coupled to the 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 the Mach-Zehnder modulator and configured to apply electric modulating voltage signals to one single modulating input of the Mach-Zehnder modulator, to thereby cause the 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.

Systems and methods for quantum communication

Techniques, methods and system, for synchronization of sparse data signals are disclosed, comprising mixing a serial stream of sparse data signals with a serial stream of synchronization signals, to thereby add redundancy to the serial stream of sparse data signals and enable clock regeneration from a serial stream of mixed signals produced by said mixing, emulating the serial stream of synchronization signals by applying the clock regeneration to the serial stream of mixed signals, and generating a stream of parallel synchronization signals having a frequency of the serial stream of synchronization signals, deserializing the serial stream of mixed signals into a stream of parallel mixed signals having a data rate lower than a data rate of the serial signal streams, and demixing the stream of parallel synchronization signals with the stream of parallel mixed signals and thereby removing the redundancy introduced by the mixing into the sparse data signals and generating a parallel stream of demixed signals substantially synchronized with said synchronization signals.

Growing community of inventors

Jerusalem, Israel

Hagai Shmuel Eisenberg