Skip to main content
# Table 1 Parameters of airborne QKD

From: Airborne quantum key distribution with boundary layer effects

Payload | Parameter | Description | Value |
---|---|---|---|

Aircraft |
v
| Flight speed | 0.7 Ma |

h
| Relative flying height | 10 km | |

\(\rho _{h}\) | Air density |
0.413 kg/m^{3}
| |

d
| The shortest horizon distance between the aircraft and the ground station | 10 km | |

Photon Source | \(D_{T}\) | Diameter of the transmitter telescope | 0.05 m |

\(\delta _{T}\) | Transmitter pointing precision [22] | 150 μrad | |

λ
| Transmitter wavelength | 1550 nm | |

\(\omega _{0}\) | Waist radius | 0.0158 m | |

\(r_{0}\) | Fried parameter in zenith [50] | 0.2 m | |

Ground station | \(D_{R}\) | Diameter of the receiver telescope | 0.3 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 | 100 MHz | |

\(P_{s}\) | Probability of signal states | 50% | |

\(P_{d}\) | Probability of decoy states | 25% | |

\(P_{v}\) | Probability of vacuum states | 25% |