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arXiv 1206.2131cs.FLquant-ph
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量子有限自动机的混合模型

On hybrid models of quantum finite automata

Lvzhou Li, Yuan Feng

摘要:

在文献中,存在几个量子有限自动机(QFA)模型的量子和经典状态。这些模型是特别感兴趣的,因为它们在一些非平凡的方面显示出比全量子模型值得称赞的优势。本文在统一的框架下刻画了这些模型的特征,提出了一个由量子分量和经典分量组成的可以相互作用的一般混合模型。现有的混合QFA可以自然地被视为具有特定通信模式(分别为经典-量子、量子-经典和双向)的一般模型。我们进一步阐明了这些混合QFA与其他量子模型之间的关系。特别是,它表明,混合QFA可以精确地模拟QFA与量子操作,这反过来又有密切的关系,两个早期提出的模型:{ \it ancialla QFA}和{ \it量子时序机}。

英文摘要:

In the literature, there exist several quantum finite automata (QFA) models with both quantum and classical states. These models are of particular interest,as they show praiseworthy advantages over the fully quantum models in some nontrivial aspects. This paper characterizes these models in a uniform framework by proposing a general hybrid model consisting of a quantum component and a classical one which can interact with each other. The existing hybrid QFA can be naturally regarded as the general model with specific communication patterns (classical-quantum, quantum-classical, and two-way, respectively). We further clarify the relationship between these hybrid QFA and some other quantum models. In particular, it is shown that hybrid QFA can be simulated exactly by QFA with quantum operations, which in turn has a close relationship with two early proposed models: {\it ancialla QFA} and {\it quantum sequential machines}.

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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