Table 1 Summary of the losses experienced by the paired photons.

From: High-quality photonic entanglement out of a stand-alone silicon chip

Components

Signal (dB)

Idler (dB)

Total (dB)

Anti-ASE filter

  

7 ± 0.1

Polarizer controller

  

0.3 ± 0.1

Grating coupler

  

5 ± 0.2

Integrated filter

2 ± 0.1

2 ± 0.1

4 ± 0.2

Grating coupler

5 ± 0.2

5 ± 0.2

10 ± 0.4

Beam splitter

6 ± 0.2

6 ± 0.2

6 ± 0.2

Bandpass filters

2 ± 0.5

2.5 ± 1.5

4.5 ± 2

SSPD

2 ± 0.2 (~60%)

3 ± 0.2 (~50%)

5 ± 0.4

Total

17 ± 1.2

18.5 ± 2.2

35.5 ± 3.2