Experimental heat-bath cooling of spins G. Brassard, Y. Elias, J. M. Fernandez, H. Gilboa, J. A. Jones, T. Mor, Y. Weinstein and L. Xiao Eur. Phys. J. Plus, 129 12 (2014) 266 Published online: 16 December 2014 DOI: 10.1140/epjp/i2014-14266-0