Title: Universal upper bounds for Gaussian information capacity Show Chinese title

Title: 高斯信息容量的通用上界

Abstract: The most natural way to describe an information-carrying system containing a specific noise is an additive white Gaussian-noise (AWGN) channel. In bosonic quantum systems (especially the Gaussian case), although the classical information capacity for a phase-insensitive and thermal-noise channel is additive based on a proof of the minimum output entropy conjecture, several open questions remain. By generalizing the Gaussian noise model from thermal noise to general Gaussian noise, we rigorously revisit and calculate these strong upper bounds on the information capacity for single-mode with general Gaussian-noise channels. In this study, we use the quantum entropy power inequality (QEPI) approach. This framework gives a new formula for finding upper bounds on the information capacity of bosonic Gaussian channels. Show Chinese abstract

Abstract: 描述包含特定噪声的信息传输系统的最自然方式是加性高斯白噪声（AWGN）信道。 在玻色量子系统（尤其是高斯情况）中，尽管相位无关和热噪声信道的经典信息容量基于最小输出熵猜想的证明是可加的，但仍有几个开放问题。 通过将高斯噪声模型从热噪声推广到一般的高斯噪声，我们严格重新审视并计算了单模一般高斯噪声信道的信息容量的强上界。 在本研究中，我们使用量子熵功率不等式（QEPI）方法。 此框架给出了一个新公式，用于寻找玻色高斯信道的信息容量的上界。