Table 2 Simulation input parameters as discussed in subsection “Towards a resource demonstration system".
From: Satellite-based quantum information networks: use cases, architecture, and roadmap
Parameter | Description | Value |
|---|---|---|
λ | Quantum channel wavelength | 810 nm/1550 nm |
H | Satellite altitude | LEO: 600 km/MEO: 8000 km |
DR | Ground receiver telescope diameter | 80 cm @LEO/100 cm @MEO |
DT | Onboard transmitter telescope diameter | 30 cm @LEO/50 cm @MEO |
Aatm,0 | Atmospheric attenuation at zenith | 3 dB @810 nm, 2 dB @1550 nm |
TR | Receiver transmission factor | 0.8 |
TT | Transmitter transmission factor | 0.8 |
Toptics | Optical module transmission factor | 0.2 @810 nm, 0.35 @1550 nm |
Lp | Pointing losses | 0.3 @810 nm, 0.2 @1550 nm |
q | Basis reconciliation factor for BBM92 | 0.5 |
f | Bidirectional error correction efficiency | 1.22 |
τ | Coincidence time window | 200 ps |
μ | Average number of photon pairs per pulse | 0.02 |
D | Detector dark count rate (same detectors in Paris and Nice) | 100 cps |
B | Background (stray light) count rate | 400 cps @810 nm, 100 cps @1550 nm |
PDE | Single photon detector efficiency | 0.9(SNSPD)/0.68(Si-APD)/0.25(IGA-APD) |
ηx | Quantum channel efficiency | Eq. (2) |
e0 | Error probability for dark- and background counts | 0.5 |
ep | Error probability of photon arriving on wrong detector | 0.01 |
Δt | Time step | 10 s |
Tfinal | Total simulation duration | 12 months |
