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Bounds on universal quantum computation with perturbed 2d cluster states
R. Orus, H. Kalis, M. Bornemann +1
Motivated by the possibility of universal quantum computation under noise perturbations, we compute the phase diagram of the 2d cluster state Hamiltonian in the presence of Ising t…
Fate of the cluster state on the square lattice in a magnetic field
H. Kalis, D. Klagges, R. Orus +1
The cluster state represents a highly entangled state which is one central object for measurement-based quantum computing. Here we study the robustness of the cluster state on the…
Comment on "Topological quantum phase transitions of attractive spinless fermions in a honeycomb lattice" by Poletti D. et al
Philippe Corboz, Sylvain Capponi, Andreas M. Laeuchli +2
In a recent letter [D. Poletti et al., EPL 93, 37008 (2011)] a model of attractive spinless fermions on the honeycomb lattice at half filling has been studied by mean-field theory,…