FIELD: optical technology.
SUBSTANCE: device comprises a sender unit connected by a quantum channel to a receiver unit. The receiver unit includes a fibre polarization beam splitter, the first output port of which is connected to the first fibre phase modulator, the second port is connected to the second fibre phase modulator, a fibre optical connector, the input ports of which are connected to the output ports of both fibre phase modulators, a fibre optical circulator, to the first port of which is connected to the output port of the fibre optical connector, whereas the first tuneable fibre spectral filter controlled by the first control unit for changing the wavelength of the fibre spectral filter is connected to the second port, whereas the third port of the circulator is connected to the second tuneable fibre spectral filter controlled by a second control unit for changing the wavelength of the fibre spectral filter, whereas the second tuneable fibre filter is connected to the single photon detector.
EFFECT: increasing the noise resistance in the fibre-optic communication line of the quantum channel of the receiver unit of the photonic quantum communication device.
1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR QUANTUM DISTRIBUTION OF A SYMMETRIC BIT SEQUENCE AT A SUBCARRIER FREQUENCY OF MODULATED RADIATION USING A DOUBLE HOMODYNE RECEPTION METHOD | 2020 |
|
RU2758708C1 |
| DEVICE FOR QUANTUM DISTRIBUTION OF A SYMMETRIC BIT SEQUENCE AT A SUBCARRIER FREQUENCY OF MODULATED RADIATION USING A HOMODYNE RECEPTION METHOD | 2020 |
|
RU2758709C1 |
| DEVICE FOR QUANTUM DISTRIBUTION OF A SYMMETRIC BIT SEQUENCE AT A SUBCARRIER FREQUENCY OF MODULATED RADIATION USING A HETERODYNE RECEPTION METHOD | 2020 |
|
RU2758711C1 |
| DEVICE FOR QUANTUM KEY DISTRIBUTION AT SIDE FREQUENCIES WHICH IS RESISTANT TO POLARIZATION DISTORTIONS OF SIGNAL IN FIBER-OPTIC COMMUNICATION LINES | 2019 |
|
RU2747164C1 |
| QUANTUM COMMUNICATION DEVICE, WHICH IS RESISTANT TO THE SINGLE PHOTON DETECTOR ACTUATION IMPOSING | 2019 |
|
RU2739051C1 |
| DEVICE FOR QUANTUM COMMUNICATION AT SIDE FREQUENCIES WITH RADIATION REGISTRATION AT THE CENTRAL FREQUENCY | 2020 |
|
RU2750810C1 |
| QUANTUM COMMUNICATION DEVICE RESISTANT TO OPTICAL PROBING OF MODULATORS | 2019 |
|
RU2737956C1 |
| DEVICE FOR QUANTUM DISTRIBUTION OF SYMMETRICAL BIT SEQUENCE BASED ON CONTINUOUS VARIABLES USING POLARIZATION COMBINER | 2023 |
|
RU2806780C1 |
| QUANTUM COMMUNICATION DEVICE RESISTANT TO LONG-WAVELENGTH OPTICAL SENSING OF MODULATORS | 2023 |
|
RU2807659C1 |
| DEVICE OF QUANTUM DISTRIBUTION OF CRYPTOGRAPHIC KEY ON MODULATED RADIATION FREQUENCY SUBCARRIER | 2010 |
|
RU2454810C1 |
