摘要
根据实际中的纠缠微波信号生成电路设计元器件参数,以提高产生纠缠微波信号的纠缠度,提出了纠缠微波信号的量子仿真模型.根据电磁场的量子化,将电场强度用可观测的物理量——正交分量来表示,把纠缠微波信号的表达式代入电场强度的表达式中,得到电场强度与输入角频率、压缩参量以及噪声涨落之间的关系.以正态分布的随机数作为噪声涨落的输入,对比分析了在不同压缩参量下电场强度正交分量随时间变化的关系以及在相同压缩参量下输入分别为真空态和压缩态时的情况.结果表明,该纠缠微波信号仿真模型所表示的电场强度能够反映出正交分量之间的正反关联特性,且关联度与压缩参量成正比,输入压缩度越高,关联度越高,与实验结论相吻合.
In order to facilitate the design of component parameters based on actual generating circuits of entangled microwave signals and improve the entanglement degree of entangled microwave signals,a quantum simulation model of entangled microwave signals is proposed.Firstly,according to the quantization of electromagnetic field,the electric-field intensity of entangled microwave signals is represented by the observable physical quantity-quadrature components.Then,the relation among the electric-field intensity and the input angular frequency,the squeezed parameter and the noise fluctuation is obtained.Subsequently,the random numbers with Gaussian distribution are used as the input of vacuum state or squeezed state to analyze the changing of the exacting quadrature components with time.It is shown that the quantum simulation model of entangled microwave signals can reflect the positive and negative correlation characteristics of quadrature components.The correlation degree is proportional to the squeezed parameter.
作者
李响
吴德伟
朱浩男
苗强
魏天丽
LI Xiang;WU De-wei;ZHU Hao-nan;MIAO Qiang;WEI Tian-li(Air Force Engineering University,Information and Navigation College,Xi’an 710077,China)
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2020年第1期92-96,共5页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(61573372,61603413)
陕西省自然科学基础研究计划项目(2017JM6017).
关键词
纠缠微波信号
量子仿真
电场强度
正反关联
正交分量
entangled microwave signals
quantum simulation
electric-field intensity
positive and negative correlation
quadrature component
