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A Subexponential Time Algorithm for the Dihedral Hidden Subgroup Problem with Polynomial Space

Oded Regev

quant-pharXiv:quant-ph/0406151

Abstract

In a recent paper, Kuperberg described the first subexponential time algorithm for solving the dihedral hidden subgroup problem. The space requirement of his algorithm is super-polynomial. We describe a modified algorithm whose running time is still subexponential and whose space requirement is only polynomial.

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