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Cost-efficient QFA Algorithm for Quantum Computers

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arxiv 2107.02262 v2 pith:U7WYXWTV submitted 2021-07-05 quant-ph cs.FL

classification quant-phcs.FL
keywords quantumfinitealgorithmcomputersautomatabasisgatesmathtt
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abstract

The study of quantum finite automata (QFAs) is one of the possible approaches in exploring quantum computers with finite memory. Despite being one of the most restricted models, Moore-Crutchfield quantum finite automaton (MCQFA) is proven to be exponentially more succinct than classical finite automata models in recognizing certain languages such as $\mathtt{MOD}_p = \{ a^{j} \mid j \equiv 0 \mod p\}$, where $p$ is a prime number. In this paper, we present a modified MCQFA algorithm for the language $\mathtt{MOD}_p$, the operators of which are selected based on the basis gates on the available real quantum computers. As a consequence, we obtain shorter quantum programs using fewer basis gates compared to the implementation of the original algorithm given in the literature.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Shallow Implementation of Quantum Fingerprinting with Application to Quantum Finite Automata

    quant-ph 2024-12 reject novelty 4.0 of 10

    A proposed shallow quantum-fingerprinting circuit based on generalized arithmetic progressions has a core theorem that is vacuous in the bounded-error regime, leaving only heuristic numerical support.

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