An application of quantum finite automata to interactive proof systems

  • Authors:
  • Harumichi Nishimura;Tomoyuki Yamakami

  • Affiliations:
  • Computer Science Program, Trent University, Peterborough, Ontario, Canada K9J 7B8;Computer Science Program, Trent University, Peterborough, Ontario, Canada K9J 7B8

  • Venue:
  • Journal of Computer and System Sciences
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

Quantum finite automata have been studied intensively since their introduction in late 1990s as a natural model of a quantum computer working with finite-dimensional quantum memory space. This paper seeks their direct application to interactive proof systems in which a mighty quantum prover communicates with a quantum-automaton verifier through a common communication cell. Our quantum interactive proof systems are juxtaposed to Dwork-Stockmeyer's classical interactive proof systems whose verifiers are two-way probabilistic finite automata. We demonstrate strengths and weaknesses of our systems by studying how various restrictions on the behaviors of quantum-automaton verifiers affect the power of quantum interactive proof systems.