研究目的
引入一个基于OMNeT++离散事件仿真框架的建?？蚣?，用于研究实现非理想性对QKD系统性能和安全性的影响。
研究成果
本文最后强调了qkdX建?？蚣茉谘芯縌KD系统实现中的实用性，包括非理想性和实际工程限制的影响。同时概述了当前和未来对其他QKD实现所需额外组件、控制器及协议进行建模的研究工作。
研究不足
该论文未明确提及局限性，但量子密钥分发技术的初级阶段状态以及实际系统实现与理想理论模型之间的差异，可被视为固有挑战。
该论文介绍了一个名为"qkdX"的量子密钥分发(QKD)实验建?？蚣?，旨在实现对QKD系统的快速建模、仿真与评估。该框架采用混合模型，同时执行离散事件仿真(DES)和连续时间(CT)计算，从而高效精准地模拟量子通信系统行为。该框架以建模包形式组织，利用OMNeT++离散事件仿真框架定义抽象与具体的QKD组件模型。其物理组件建?？獍阅？榛⒉问绞缴杓频墓庋Ъ暗绻馄骷?，支持不同抽象层级以满足用户需求。
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OMNeT++
Discrete event simulation framework
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Fixed Optical Attenuator
To reduce the strength of optical pulses
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Electrical Variable Optical Attenuator
To reduce the strength of optical pulses with variable attenuation controlled through an electrical signal
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Bandpass Filter
To transmit only the desired wavelength of light
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Beamsplitter
To divide optical pulses into two pulses: a reflected and a transmitted pulse
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Polarizing Beamsplitter
To split optical pulses into two pulses: a reflected and a transmitted pulse according to orthogonal polarizations
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Circulator
To route optical pulses from one port to an adjacent port
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Classical Detector
To detect classical optical pulses
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Single Photon Detector
To detect weak optical pulses
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Half-Wave Plate and Quarter-Wave Plate
To create a phase shift to rotate linearly polarized light
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In-line Polarizer
To polarize optical pulses into a known orientation
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Isolator
To transmit optical pulses in the forward direction and severely attenuate or isolate optical pulses passing in the reverse direction
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Laser
To generate coherent optical pulses
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Optical Switch 1×2
To route optical pulses from the input port to one or two output ports according to an electrical signal
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Polarization Controller
To correct for polarization errors in orientation and ellipticity
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Polarization Maintaining Fiber Channel
To propagate optical pulses while maintaining the pulse's polarization state
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Polarization Modulator
To modify the polarization of optical pulses
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Wave Division Multiplexer and Dichroic Mirror
To combine or split multiple wavelengths of light
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