光学学报, 2020, 40 (3): 0327001, 网络出版: 2020-02-10
煤烟凝聚粒子对量子卫星通信性能的影响 下载: 957次
Influence of Soot Agglomerated Particles on Quantum Satellite Communication Performance
量子通信 煤烟凝聚粒子 振幅阻尼信道 信道容量 纠缠保真度 信道误码率 quantum communication soot agglomerated particles amplitude damping channel channel capacity entanglement fidelity channel bit error rate
摘要
为了研究煤烟凝聚粒子对量子卫星通信性能的影响,根据煤烟凝聚粒子等效模型对粒子消光特性进行分析,结合粒子质量浓度转换公式建立传输距离、粒子数浓度与链路衰减、振幅阻尼信道容量、纠缠保真度和信道误码率之间的关系并进行仿真。仿真结果表明,当传输距离为2 km时,煤烟凝聚粒子数浓度从2.22×10 12 m -3增加到1.11×10 13 m -3,链路衰减从0.40 dB增加到2.47 dB,振幅阻尼信道容量和纠缠保真度均有不同程度的下降,信道误码率从0.0056增加到0.0067。由此可见,煤烟凝聚粒子对量子卫星通信的性能有显著影响。因此,为了在实际信息传输过程中提高系统可靠性,应对量子通信系统的各项参数进行适当的调整,以适应煤烟环境对量子卫星通信产生的不同程度的影响。
Abstract
In this study, the extinction characteristics of the soot agglomerated particles have been analyzed to study their influence on the quantum satellite communication performance. Furthermore, the relations among the transmission distance, particle number concentration, link attenuation, amplitude damping channel capacity, entanglement fidelity, and channel bit error rate are established and simulated by combining the particle mass concentration conversion formula. According to the simulation results, the concentration of the soot agglomerated particles increases from 2.22×10 12 to 1.11×10 13 m -3 and link attenuation increases from 0.40 to 2.47 dB when the transmission distance is 2 km. Additionally, the amplitude damping channel capacity and entanglement fidelity exhibit varying degrees of decline, whereas the channel bit error rate increases from 0.0056 to 0.0067. The soot agglomerated particles considerably influence the quantum satellite communication performance. Therefore, the quantum communication system parameters should be appropriately adjusted to the soot environment in case of quantum satellite communication, which may cause different influences, to improve the stability during the information transmission process.
刘邦宇, 张秀再, 徐茜. 煤烟凝聚粒子对量子卫星通信性能的影响[J]. 光学学报, 2020, 40(3): 0327001. Bangyu Liu, Xiuzai Zhang, Xi Xu. Influence of Soot Agglomerated Particles on Quantum Satellite Communication Performance[J]. Acta Optica Sinica, 2020, 40(3): 0327001.