Abstract: A synchronization system for synchronizing photons in a quantum teleportation network. The synchronization system includes a multiplexer combining a clock pulse with a signal photon (carrying a qubit) in an optical fiber, the optical fiber connecting a transmitter node (including the multiplexer) and a receiver node (comprising a demultiplexer). The signal photons have signal wavelengths red shifted as compared to clock wavelengths of the clock pulses. The clock pulses have an intensity below a threshold, such that Raman scattering of the clock pulses by the fiber (shifting the clock wavelengths into the signal wavelengths) is negligible. The receiver node comprises a demultiplexer demultiplexing the one of the signal photons and the one of the clock pulses; a first detector detecting the one of the signal photons; and a second detector detecting the one of the clock pulses.

Abstract: The present disclosure relates to an apparatus for generating light pulses, comprising a laser device configured to output the light pulses and a pulse driver configured to supply electrical pulses to the laser device to drive the laser device. Furthermore, the pulse driver is configured to supply the electrical pulses with amplitudes/intensities obeying a pre-determined probability distribution to the laser device such that quadrature values of the light pulses obey another pre-determined probability distribution.