Physics – Quantum Physics
Scientific paper
2010-10-15
Physics
Quantum Physics
13 pages, 10 figures. Final version, accepted by Journ\'ees Automates Cellulaires (JAC 2010). Companion website with animated
Scientific paper
This research describes a three dimensional quantum cellular automaton (QCA) which can simulate all other 3D QCA. This intrinsically universal QCA belongs to the simplest subclass of QCA: Partitioned QCA (PQCA). PQCA are QCA of a particular form, where incoming information is scattered by a fixed unitary U before being redistributed and rescattered. Our construction is minimal amongst PQCA, having block size 2 x 2 x 2 and cell dimension 2. Signals, wires and gates emerge in an elegant fashion.
Arrighi Pablo
Grattage Jonathan
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