Fig. 1. Quantum communication system model based on quantum noise channel

Fig. 2. Schematic diagram of EWA for quantum satellite communication links

Fig. 3. Schematic diagram of a single-entangled source quantum channel EWA strategy

Fig. 4. Relationship among haze particle concentration, air humidity, and visibility

Fig. 5. Effect of different parameters on channel capacity of the amplitude damping channel. (a) Number of users and communication distance; (b) visibility and communication distance

Fig. 6. Effect of different parameters on quantum error rate under EWA strategy. (a) Communication distance and visibility; (b) number of available channel and visibility