Table 1 Experimental set-up calibration.
Transmission | Error bar | |
|---|---|---|
Optical window | 0.929 | ±3.0% |
50 × microscope objective | 0.787 | ±3.0% |
50/50 beam splitter | 0.490 | ±3.0% |
50/50 beam splitter | 0.490 | ±3.0% |
Silver mirror | 0.956 | ±3.0% |
A 920 nm narrow band filter/a 900 nm long pass filter | 0.568 | ±2.0% |
A coupling lens | 0.960 | ±3.0% |
Single-photon detector efficiency | 0.300 | ±5.0% |
Overall detection efficiency | 0.027 | ±9.1% |
