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arXiv 1402.0404quant-phmath-phmath.MP
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玻色量子系统熵幂不等式的推广

A generalization of the Entropy Power Inequality to Bosonic Quantum Systems

Giacomo De Palma, Andrea Mari, Vittorio Giovannetti

摘要:

在大多数通信方案中,信息是通过电磁辐射的传播模式来传输的。这些模式不可避免地受到沿任何物理传输介质的环境噪声的影响,并且通信信道的质量在很大程度上取决于在输出处可实现的最小噪声。对于经典信号,这样的噪声可以严格量化的相关香农熵,它是一个基本的下限称为熵功率不等式。然而,电磁场是量子力学系统,特别是在低强度信号中,信息载体的量子性质不能被忽视,经典信息理论中的许多重要结果需要对量子机制进行非平凡的扩展。在这里,我们证明了一个可能的推广的熵功率不等式的量子玻色子系统。这个不等式在量子信息理论中的影响是潜在的大,并在这项工作中考虑了一些相关的含义。

英文摘要:

In most communication schemes information is transmitted via travelling modes of electromagnetic radiation. These modes are unavoidably subject to environmental noise along any physical transmission medium and the quality of the communication channel strongly depends on the minimum noise achievable at the output. For classical signals such noise can be rigorously quantified in terms of the associated Shannon entropy and it is subject to a fundamental lower bound called entropy power inequality. Electromagnetic fields are however quantum mechanical systems and then, especially in low intensity signals, the quantum nature of the information carrier cannot be neglected and many important results derived within classical information theory require non-trivial extensions to the quantum regime. Here we prove one possible generalization of the Entropy Power Inequality to quantum bosonic systems. The impact of this inequality in quantum information theory is potentially large and some relevant implications are considered in this work.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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