Decoy State Quantum Key Distribution via Beam-Wandering Modeled Atmosphere Channel

• 作 者: 张胜利 金晨辉 郭建胜 史建红 邹旭波 郭光灿
• 机 构: The PLA Information Engineering University,Key Laboratory of Quantum information,University of Scien
• 出 处: Chinese Physics Letters
• 发表日期: 2016年12期
• 关键词: decoy turbulence realistic transmittance fluctuating Atmosphere secure photon co

We investigate the decoy state quantum key distribution via the atmosphere channels.We consider the efficient decoy state method with one-signal state and two-decoy states.Our results show that the decoy state method works even in the channels with fluctuating transmittance.Nevertheless,the key generation rate will be dramatically decreased by atmosphere turbulence,which sheds more light on the characterization of atmosphere turbulence in realistic free-space based quantum key distributions.

We investigate the decoy state quantum key distribution via the atmosphere channels. We consider the efficient decoy state method with one-signal state and two-decoy states. Our results show that the decoy state method works even in the channels with fluctuating transmittance. However, the key generation rate will be dramatically decreased by atmosphere turbulence, which sheds more light on the characterization of atmosphere turbulence in realistic free-space based quantum key distributions.