Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers

Research Article

Simulating BB84 Protocol in Dephasing Qubit Channel

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  • @INPROCEEDINGS{10.1007/978-3-642-11731-2_29,
        author={Xiao-yu Chen},
        title={Simulating BB84 Protocol in Dephasing Qubit Channel},
        proceedings={Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers},
        proceedings_a={QUANTUMCOMM},
        year={2012},
        month={10},
        keywords={Dephasing channel quantum capacity BB84 protocol degradable},
        doi={10.1007/978-3-642-11731-2_29}
    }
    
  • Xiao-yu Chen
    Year: 2012
    Simulating BB84 Protocol in Dephasing Qubit Channel
    QUANTUMCOMM
    Springer
    DOI: 10.1007/978-3-642-11731-2_29
Xiao-yu Chen1,*
  • 1: Zhejiang Gongshang University
*Contact email: xychen@zjsu.edu.cn

Abstract

BB84 protocol of quantum key distribution had been proved to be absolutely secure. We simulate the rate of secure key distribution in dephasing channel on a classical computer with the method of event-by-event simulation. Theoretically, the private classical capacity of dephasing channel can be obtained in principle, since the channel is degradable. We give the formula of capacity with respect to the dephasing coefficient. The simulation meets the theory well.