QIP $ \subseteq $ AM(2QCFA)

Fuente: arXiv
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Main Author: Yakaryılmaz, Abuzer
Format: Preprint
Published: 2025
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author Yakaryılmaz, Abuzer
author_facet Yakaryılmaz, Abuzer
contents The class of languages having polynomial-time classical or quantum interactive proof systems ($\mathsf{IP}$ or $\mathsf{QIP}$, respectively) is identical to $\mathsf{PSPACE}$. We show that $\mathsf{PSPACE}$ (and so $\mathsf{QIP}$) is subset of $\mathsf{AM(2QCFA)}$, the class of languages having Arthur-Merlin proof systems where the verifiers are two-way finite automata with quantum and classical states (2QCFAs) communicating with the provers classically. Our protocols use only rational-valued quantum transitions and run in double-exponential expected time. Moreover, the member strings are accepted with probability 1 (i.e., perfect-completeness).
format Preprint
id arxiv_https___arxiv_org_abs_2508_21020
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle QIP $ \subseteq $ AM(2QCFA)
Yakaryılmaz, Abuzer
Quantum Physics
Computational Complexity
Formal Languages and Automata Theory
The class of languages having polynomial-time classical or quantum interactive proof systems ($\mathsf{IP}$ or $\mathsf{QIP}$, respectively) is identical to $\mathsf{PSPACE}$. We show that $\mathsf{PSPACE}$ (and so $\mathsf{QIP}$) is subset of $\mathsf{AM(2QCFA)}$, the class of languages having Arthur-Merlin proof systems where the verifiers are two-way finite automata with quantum and classical states (2QCFAs) communicating with the provers classically. Our protocols use only rational-valued quantum transitions and run in double-exponential expected time. Moreover, the member strings are accepted with probability 1 (i.e., perfect-completeness).
title QIP $ \subseteq $ AM(2QCFA)
topic Quantum Physics
Computational Complexity
Formal Languages and Automata Theory
url https://arxiv.org/abs/2508.21020