QUANTUM STATE GENERATION DEVICE FOR ON-CHIP QUANTUM COMMUNICATIONS SYSTEMS Russian patent published in 2024 - IPC H04L9/08 G02B6/43 H01S5/02 

FIELD: quantum cryptography.

SUBSTANCE: proposed device contains the following structural elements: a semiconductor laser operating in continuous mode; amplitude modulator, made in the form of a symmetrical Mach-Zehnder interferometer and consisting of a disconnector, a combiner, narrowband and broadband phase modulators; an additional disconnector installed after the amplitude modulator combiner before the broadband phase modulator; an adjustable optical attenuator installed after the broadband phase modulator and made in the form of a disconnector, two narrowband phase modulators and an X-shaped coupler; an additional adjustable optical attenuator installed before entering the quantum channel and made in the form of two narrow-band amplitude modulators and a combiner.

EFFECT: improved resistance of a quantum telecommunication system to quantum errors, as well as to attacks on the quantum telecommunication system carried out on the sender's side.

1 cl, 6 dwg