Physical layer security monitoring of optical communication using a quantum pilot tone signal
Yupeng Gong, A. Wonfor, Jeffrey H. Hunt, Richard V. Penty · Conference on Lasers and Electro-Optics · 2022
We demonstrate a low-complexity, quantum-level-sensitivity security monitoring system using a quantum pilot tone which is detected by an independent local oscillator, with compact data conversion acquisition units over a 10dB loss channel.