Table 1 Parameter sets for describing the performance of the state-of-the-art SPS-based QKD free-space implementations for quantum dots44, color centers in diamond51, fiber-based implementation for quantum dots47, and this work.

From: Atomically-thin single-photon sources for quantum communication

 

Ref. 44

Ref. 51

Ref. 47

This work

Improved

λ (nm)

877

600-800

1580.5

807

807

μ

0.007

0.029

0.009

0.013

0.050

pdc

1.05e − 6

24.00e − 6

0.3e − 6

16.00e − 6

2.0e − 6

edetector

0.025

0.030

0.023

0.008

0.008

ηBob

0.24

0.31

0.048

0.56

0.56

g(2)(0)

0.14

0.09

0.0051

0.133

0.05

  1. Here, pdc is the dark count probability and edetector the static contribution of the receiver module to the QBER.