Quantum computation with devices whose contents are never read
Abstract
In classical computation, a "write-only memory" (WOM) is little more than an oxymoron, and the addition of WOM to a (deterministic or probabilistic) classical computer brings no advantage. We prove that quantum computers that are augmented with WOM can solve problems that neither a classical computer with WOM nor a quantum computer without WOM can solve, when all other resource bounds are equal. We focus on realtime quantum finite automata, and examine the increase in their power effected by the addition of WOMs with different access modes and capacities. Some problems that are unsolvable by two-way probabilistic Turing machines using sublogarithmic amounts of read/write memory are shown to be solvable by these enhanced automata.
Cite
@article{arxiv.1011.1201,
title = {Quantum computation with devices whose contents are never read},
author = {Abuzer Yakaryilmaz and Rusins Freivalds and A. C. Cem Say and Ruben Agadzanyan},
journal= {arXiv preprint arXiv:1011.1201},
year = {2014}
}
Comments
32 pages, a preliminary version of this work was presented in the 9th International Conference on Unconventional Computation (UC2010)