Скачать или смотреть Konrad Banaszek (FUW): IM/DD OKD: Intensity modulation/direct detection optical key distribution

Prof. Konrad Banaszek (Centre for Quantum Optical Technologies and Faculty of Physics, University of Warsaw, Poland).
IM/DD OKD: Intensity modulation/direct detection optical key distribution.

Intensity modulation/direct detection optical key distribution (IM/DD OKD) is a technique to generate a cryptographic key over an optical communication link that is secure against passive eavesdropping. The key security is guaranteed by the shot noise inherent to the photodetection process and can be ensured even when the fraction of the signal captured by an eavesdropper is larger than that received by the legitimate recipient. This talk will review the physical principle of IM/DD OKD, present a proof-of-principle demonstration, and discuss estimates for attainable key rates in space-to-ground communication scenarios.

‍Wednesday colloquium at CTP PAS – 2024-02-21