Quantum key distribution system based on multi-classification learning detection and implementation method thereof

The invention provides a quantum key distribution system based on multi-classification learning detection and an implementation method thereof. The quantum key distribution system comprises a sending end Alice, a receiving end Bob and a post-processing program module based on multi-classification learning. The transmitting end Alice performs Gaussian modulation on a quantum signal, and transmits the modulated quantum signal to the receiving end Bob through a quantum channel; the receiving end Bob is a quantum key receiving end Bob, a homodyne detector is used for measuring received quantum signals, a power meter is used for measuring local oscillation light intensity, a clock circuit is used for providing clock signals, and finally quantum signal data are sent to a post-processing program module based on multi-classification learning through a classical quantum channel. And the post-processing program module based on multi-classification learning analyzes and processes the quantum signal data to generate a fi