A low-noise, high-SNR balanced homodyne detector for the bright squeezed state measurement in 1–100 kHz range Project supported by the National Natural Science Foundation of China (Grant Nos. 11654002, 61575114, 11874250, and 11804207), the National Key Research and Development Program of China (Grant No. 2016YFA0301401), the Program for Sanjin Scholar of Shanxi Province, China, the Program for Outstanding Innovative Teams of Higher Learning Institutions of Shanxi, China, the Fund for Shanxi “1331 Project” Key Subjects Construction, China, and Key Research and Development Projects of Shanxi Province, China (Grant No. 201903D111001). |
Simulation curves of the electronic noises of the photodetector versus the analysis frequency with (red solid line) and without (black dashed line) the DC amplication branch. |