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Hidden symmetry detection on a quantum computer

R. Schützhold·W. G. Unruh
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Abstract

The fastest quantum algorithms (for the solution of classical computational tasks) known so far are basically variations of the hidden subgroup problem with {$f(U[x])=f(x)$}. Following a discussion regarding which tasks might be solved efficiently by quantum computers, it will be demonstrated by means of a simple example, that the detection of more general hidden (two-point) symmetries {$V\{f(x),f(U[x])\}=0$} by a quantum algorithm can also admit an exponential speed-up. E.g., one member of this class of symmetries {$V\{f(x),f(U[x])\}=0$} is discrete self-similarity (or discrete scale invariance). PACS: 03.67.Lx, 89.70.+c.

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R. Schützhold, W. G. Unruh. 2006-06-19. Hidden symmetry detection on a quantum computer. https://arxiv.org/abs/quant-ph/0304090

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