论文标题
统一量子通道的量子和经典噪声的联合建模
Joint Modelling of Quantum and Classical Noise over Unity Quantum Channel
论文作者
论文摘要
对于连续输入连续输出任意分布的量子通道带有经典信息，可以根据通道信封的分布来计算通道容量，在量子传播场和噪声频谱密度上接收信号强度。如果通道信封被认为是单位接收的信号强度的统一性，则控制容量的因子是噪声。携带经典信息的量子通道将遭受经典噪声和量子噪声的结合。假设加斯高斯分布的经典噪声和泊松分布的量子噪声，我们通过在这封信中得出关节高斯 - 泊松分布来制定混合噪声模型。对于传输信号，我们考虑信号样本空间的平均值，而不是考虑特定的分布并研究最大互信息如何在这种平均值上变化。通过在Unity通道信封上最大化相互信息来估算容量。
For a continuous-input-continuous-output arbitrarily distributed quantum channel carrying classical information, the channel capacity can be computed in terms of the distribution of the channel envelope, received signal strength over a quantum propagation field and the noise spectral density. If the channel envelope is considered to be unity with unit received signal strength, the factor controlling the capacity is the noise. Quantum channel carrying classical information will suffer from the combination of classical and quantum noise. Assuming additive Gaussian-distributed classical noise and Poisson-distributed quantum noise, we formulate a hybrid noise model by deriving a joint Gaussian- Poisson distribution in this letter. For the transmitted signal, we consider the mean of signal sample space instead of considering a particular distribution and study how the maximum mutual information varies over such mean value. Capacity is estimated by maximizing the mutual information over unity channel envelope.
