摘要
Considering the air-water interface and ocean water’s optical attenuation,the performance of quantum key distribution(QKD)based on air-water channel is studied.The effects of photons’various incident angles to air-water interface on quantum bit error rate(QBER)and the maximum secure transmission distance are analyzed.Taking the optical attenuation of ocean water into account,the performance bounds of QKD in different types of ocean water are discussed.The simulation results show that the maximum secure transmission distance of QKD gradually reduces as the incident angle from air to ocean water increases.In the clearest ocean water with the lowest attenuation,the maximum secure transmission distance of photons far exceeds the the working depth of underwater vehicles.In intermediate and murky ocean waters with higher attenuation,the secure transmission distance shortens,but the underwater vehicle can deploy other accessorial methods for QKD with perfect security.So the implementation of OKD between the satellite and the underwater vehicle is feasible.
Considering the air-water interface and ocean water＇s optical attenuation, the performance of quantum key distribution （QKD） based on air-water channel is studied. The effects of photons＇ various incident angles to air-water interface on quantum bit error rate （QBER） and the maximum secure transmission distance are analyzed. Taking the optical attenua- tion of ocean water into account, the performance bounds of QKD in different types of ocean water are discussed. The simulation results show that the maximum secure transmission distance of QKD gradually reduces as the incident angle from air to ocean water increases. In the clearest ocean water with the lowest attenuation, the maximum secure trans- mission distance of photons far exceeds the the working depth of underwater vehicles. In intermediate and murky ocean waters with higher attenuation, the secure transmission distance shortens, but the underwater vehicle can deploy other accessorial methods for QKD with perfect security. So the implementation of OKD between the satellite and the un- derwater vehicle is feasible.
基金
supported by the National High Technology Research and Development Program of China(No.2011AA7014061)
关键词
量子密钥分发
性能分析
水通道
空气
传输距离
量子密钥分配
比特误码率
安全性
Air
Bit error rate
Electromagnetic wave attenuation
Oceanography
Optical communication
Phase interfaces
Photons
Vehicle transmissions
Vehicles
