From: Airborne quantum key distribution with boundary layer effects
Payload | Parameter | Description | Value |
---|---|---|---|
Aircraft | v | Flight speed | 0.7Â Ma |
h | Relative flying height | 10Â km | |
\(\rho _{h}\) | Air density | 0.413Â kg/m3 | |
d | The shortest horizon distance between the aircraft and the ground station | 10Â km | |
Photon Source | \(D_{T}\) | Diameter of the transmitter telescope | 0.05Â m |
\(\delta _{T}\) | Transmitter pointing precision [22] | 150 μrad | |
λ | Transmitter wavelength | 1550 nm | |
\(\omega _{0}\) | Waist radius | 0.0158Â m | |
\(r_{0}\) | Fried parameter in zenith [50] | 0.2 m | |
Ground station | \(D_{R}\) | Diameter of the receiver telescope | 0.3Â m |
\(e_{d}\) | System detection error rate | 1% | |
\(p_{d}\) | Dark count rate | 2 × 10−6 | |
\(\eta _{d}\) | Detector efficiency | 15% | |
\(\eta _{s}\) | Receiving optical module efficiency | 60% | |
Protocols | μ | Intensity of signal states | 0.8 |
ν | Intensity of decoy states | 0.1 | |
N | System repetition rate | 100Â MHz | |
\(P_{s}\) | Probability of signal states | 50% | |
\(P_{d}\) | Probability of decoy states | 25% | |
\(P_{v}\) | Probability of vacuum states | 25% |