1The PLA Information Engineering University, Zhengzhou 450004 2Key Laboratory of Quantum information, University of Science and Technology of China, Hefei 230026
Abstract：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.
2016, Vol. 33 
