IM/DD OKD: Intensity modulation/direct detection optical key distribution




Centre for Quantum Optical Technologies and Faculty of Physics, University of Warsaw, Poland

February 21, 2024 12:30 PM

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.

This is a hybrid event:
Auditorium of the Institute of Physics PAS, Al. Lotników 32/46

Online: Zoom Link, (Passcode: 134595, Meeting ID: 823 8038 0442)