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arXiv 1104.0583quant-ph
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量子系统识别

Quantum System Identification

Daniel Burgarth, Kazuya Yuasa

摘要:

量子系统识别的目的是通过观察它的输入输出行为来估计黑盒子里的成分,在黑盒子里发生了一些量子力学的幺正过程。在这里,我们建立了一个基本的和一般的框架,量子系统识别,使我们能够分类有多少知识的量子系统是可以实现的,在原则上,从一个给定的实验设置。黑盒某些元素的先验知识有助于系统识别。我们提出了一个例子,其中贝尔测量是更有效地识别系统。当系统的拓扑结构已知时,该框架使我们能够建立一个通用的标准,其哈密顿量中的耦合常数的可估计性。

英文摘要:

The aim of quantum system identification is to estimate the ingredients inside a black box, in which some quantum-mechanical unitary process takes place, by just looking at its input-output behavior. Here we establish a basic and general framework for quantum system identification, that allows us to classify how much knowledge about the quantum system is attainable, in principle, from a given experimental setup. Prior knowledge on some elements of the black box helps the system identification. We present an example in which a Bell measurement is more efficient to identify the system. When the topology of the system is known, the framework enables us to establish a general criterion for the estimability of the coupling constants in its Hamiltonian.

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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