%0 Journal Article %J Physical Review A %D 2008 %T Wigner crystals of ions as quantum hard drives %A J. M. Taylor %A T. Calarco %X Atomic systems in regular lattices are intriguing systems for implementing ideas in quantum simulation and information processing. Focusing on laser cooled ions forming Wigner crystals in Penning traps, we find a robust and simple approach to engineering non-trivial 2-body interactions sufficient for universal quantum computation. We then consider extensions of our approach to the fast generation of large cluster states, and a non-local architecture using an asymmetric entanglement generation procedure between a Penning trap system and well-established linear Paul trap designs. %B Physical Review A %V 78 %8 2008/12/18 %G eng %U http://arxiv.org/abs/0706.1951v1 %N 6 %! Phys. Rev. A %R 10.1103/PhysRevA.78.062331