Laser Cooling of Lanthanides: from Optical Clocks to Quantum Simulators A. Golovizin, E. Kalganova, G. Vishnyakova, D. Tregubov, K. Khabarova, V. Sorokin and N. Kolachevsky EPJ Web of Conferences, 103 (2015) 01007 Published online: 25 September 2015 DOI: 10.1051/epjconf/201510301007