Empfangsvorrichtung und -Verfahren für Quantenschlüsselverteilung (qkd)

Details

Veröffentlichungs-Nr.

EP4804456

Anmeldetag

24. Februar 2026

Veröffentlichung

9. September 2026

Rechtsraum

EP

IPC

H04L9/08

Abstract

A quantum key distribution (QKD) receiving device includes N input ports connected to N transmission lines, respectively, the N transmission lines being relevant to a specific QKD link and respectively transmitting N divided optical signals obtained by division of an optical signal in a QKD transmission device and being connected to the QKD transmission device, a QKD receiving unit that performs at least quantum key distillation processing, a switch that switches a connection line connected to the QKD receiving unit via one of the input ports, among the N transmission lines, and a control unit that selects a switching destination line of the connection line from at least one transmission line excluding a first transmission line among the N transmission lines in a case where the first transmission line among the N transmission lines is the connection line and a communication failure of the first transmission line has occurred.

Anmelder

Firma

NEC Corporation

Land

🇯🇵 Japan

Fachgebiete