METHOD AND DEVICE FOR GENERATING QUANTUM STATES WITH PHASE CODING AND TRAP STATES Russian patent published in 2024 - IPC H04B10/548 

FIELD: quantum engineering.

SUBSTANCE: present invention relates to the field of quantum key distribution (QKD) encryption, in particular for the generation of coherent quantum states in a protocol with phase-time encoding and trap states. In the method for generating quantum states with phase encoding and trap states and the device for its implementation, it is proposed to generate single optical pulses using a laser when forming quantum states (the diagram of the proposed device is shown in the graphic image), prepare a pair of identical coherent optical pulses with a fixed time delay by separation of the original optical pulse, then modulate the power of a pair of optical pulses and produce a relative phase shift between the optical pulses in the pair. A pair of pulses that has gone through the stages described above is an information quantum state.

EFFECT: simplification of the design, implementation of a protocol with phase coding and trap states.

3 cl, 1 dwg, 2 tbl