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TT: Fachverband Tiefe Temperaturen

TT 38: Poster Session Transport

TT 38.31: Poster

Mittwoch, 16. März 2011, 14:00–18:00, P3

Effective two-spin models for measurement based quantum computing — •Daniel Klagges and Kai Phillip Schmidt — Lehrstuhl für Theoretische Physik I, TU Dortmund, 44221 Dortmund, Germany

The cluster state is an universal resource for measurement based quantum computation. One might consider to prepare a cluster state by cooling a suitable chosen Hamiltonian into its ground state. Unfortunately there is no Hamiltonian only containing (realistic) two-spin interactions with the cluster state as its only ground state. But there exist microscopic models consisting solely of two-spin interactions for which the ground state is approximately the cluster state. Here we present high order series expansions of such Hamiltonians, in order to investigate their usability in the context of measurement based quantum computation.