Quantum key distribution system
US12231176B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2024 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Oct 23, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/532
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A quantum key distribution system is provided, including: a sending terminal, a measurement terminal, a receiving terminal, and at least one polarization controller. The sending terminal is configured to generate a quantum optical signal and receive a detection result. The measurement terminal includes a beam splitter and two single-photon detectors, the beam splitter is configured to generate two measurement optical signals based on the quantum optical signal, and the two single-photon detectors are configured to generate the detection result. The receiving terminal is configured to receive the detection result. The at least one polarization controller is provided in the sending terminal, the measurement terminal or the receiving terminal, and performs a polarization processing on the quantum optical signal or the detection result using a target transmittance matrix determined based on the detection result, so as to obtain a polarized quantum optical signal or a polarized detection result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.