Magnetic ordering of nitrogen-vacancy centers in diamond via resonator-mediated coupling Bo-Bo Wei, Christian Burk, Jörg Wrachtrup and Ren-Bao Liu EPJ Quantum Technol., 2 1 (2015) 18 Published online: 21 July 2015 DOI: 10.1140/epjqt/s40507-015-0032-2