Creation of two-dimensional Coulomb crystals of ions in oblate Paul traps for quantum simulations Bryce Yoshimura, Marybeth Stork, Danilo Dadic, Wesley C Campbell and James K Freericks EPJ Quantum Technol., 2 1 (2015) 2 Published online: 04 January 2015 DOI: 10.1140/epjqt14