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arxiv: 1101.3837 · v2 · pith:GZBZHACGnew · submitted 2011-01-20 · 💻 cs.CC · cs.FL· quant-ph

Superiority of exact quantum automata for promise problems

classification 💻 cs.CC cs.FLquant-ph
keywords automataproblemspromisequantumamplitudesboundclassicalcorresponding
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In this note, we present an infinite family of promise problems which can be solved exactly by just tuning transition amplitudes of a two-state quantum finite automata operating in realtime mode, whereas the size of the corresponding classical automata grow without bound.

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