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26 January 2021
 
  » arxiv » 2001.5247

 Article overview


How Does Adiabatic Quantum Computation Fit into Quantum Automata Theory?
Tomoyuki Yamakami ;
Date 15 Jan 2020
AbstractQuantum computation has emerged as a powerful computational medium of our time, having demonstrated the efficiency in solving the integer factoring and searching a database faster than any currently known classical computer algorithm. Adiabatic evolution of quantum systems have been studied as a potential means that physically realizes quantum computation. Up to now, all the research on adiabatic quantum systems has dealt with polynomial time-bounded computation and little attention has been paid to, for example, adiabatic quantum systems consuming only constant memory space. Such quantum systems can be modeled in a form similar to quantum finite automata. This exposition dares to ask a bold question of how to make adiabatic quantum computation fit into the rapidly progressing framework of quantum automata theory. As our answer to this eminent but profound question, we first lay out a fundamental platform for adiabatic evolutionary quantum systems (AEQSs) with limited computational resources and then establish how to construct AEQSs using quantum finite automata. We also explore fundamental structural properties of decision problems (or equivalently, languages) solved quickly by such AEQSs.
Source arXiv, 2001.5247
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