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arXiv quant-ph/9905026quant-phcs.CCcs.FL
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量子有限多带自动机

Quantum finite multitape automata

Andris Ambainis, Richard Bonner, Rusins Freivalds, Marats Golovkins, Marek Karpinski

摘要:

量子有限自动机由C.Moore,J.P. Crutchfield,A.Kondacs和J.Watrous提出。这个概念不是确定性有限自动机的推广。此外,证明了不是所有的正则语言都能被量子有限自动机识别。A.Ambainis和R.Freivalds证明了对于某些语言,量子有限自动机可能比确定性和概率有限自动机更简洁。本文引入了量子有限多带自动机的概念,并证明了存在一种能被量子有限自动机识别而不能被确定性或概率性有限自动机识别的语言。这是量子计算机可以解决的问题的第一个结果,但不能由确定性或概率计算机解决。此外,我们发现意想不到的概率自动机识别复杂的语言。

英文摘要:

Quantum finite automata were introduced by C.Moore, J.P. Crutchfield, and by A.Kondacs and J.Watrous. This notion is not a generalization of the deterministic finite automata. Moreover, it was proved that not all regular languages can be recognized by quantum finite automata. A.Ambainis and R.Freivalds proved that for some languages quantum finite automata may be exponentially more concise rather than both deterministic and probabilistic finite automata. In this paper we introduce the notion of quantum finite multitape automata and prove that there is a language recognized by a quantum finite automaton but not by a deterministic or probabilistic finite automata. This is the first result on a problem which can be solved by a quantum computer but not by a deterministic or probabilistic computer. Additionally we discover unexpected probabilistic automata recognizing complicated languages.

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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