Noise Analysis and Co-propagation of Continuous-variable Quantum Key Distribution with 14 Classical Channels Over 25.7 km Received With a Real-time Bob

Real-time CV-QKD Bob achieves peak 0.65 Mbps secret key rates over 25.7 km of fiber while co-propagating 14 adjacent classical channels. Performance degrades at higher classical launch powers due to higher excess noise from crosstalk and possible nonlinear optical effects.