公开(公告)号：EP4311160A1

公开(公告)日：2024-01-24

申请号：EP22186505.8

申请日：2022-07-22

申请人： Terra Quantum AG

发明人： Vinokur, Valerii M. ,  Kirsanov, Nikita S. ,  Lesovik, Gordey B. ,  Sekatski, Pavel ,  Kolybelnikov, Alexander ,  Pastushenko, Valeria ,  Kodukhov, Alexey

IPC分类号： H04L9/08

摘要： A quantum key distribution device comprises an input signal path adapted to receive a plurality of optical input signals from a transmitter device, an output signal path connected to the input signal path at a first end and adapted to emit a plurality of first optical output signals at a second end opposite to the first end, and a detector signal path connected to the input signal path at a third end and comprising a photon detector device at a fourth end opposite to the third end. The photon detector device is adapted to detect the optical input signals from the transmitter device, and the quantum key distribution device is adapted to establish a shared quantum cryptographic key with the transmitter device based on the detected optical input signals. The input signal path forms an input path of a Mach-Zehnder interferometer, and the output signal path and the detector signal path form output paths of the Mach-Zehnder interferometer.