Fig. 1. APD test chart in linear mode

Fig. 2. Diagram of the QDT experimental setup

Fig. 3. (a) Diagram of sinusoidal gating experimental device based on low pass filtering; (b) APD output signal waveform at 1500 MHz gate frequency; (c) Avalanche signal after low-pass filter and amplification

Fig. 4. (a) Dark counting and afterpulse probability at 10.0% detection efficiency; (b) Test chart of different detection frequencies at 20% detection efficiency

Fig. 5. Performance test chart at different temperatures with 20.0% detection efficiency

Fig. 6. Counting without incident light intensity

Fig. 7. (a) QDT chromatography, fitting and theoretical diagram; (b) Wigner function diagram

Fig. 8. 12 hour stability test chart under 20.0% detection efficiency