{\rtf1\ansi\deff0\deftab360 {\fonttbl {\f0\fswiss\fcharset0 Arial} {\f1\froman\fcharset0 Times New Roman} {\f2\fswiss\fcharset0 Verdana} {\f3\froman\fcharset2 Symbol} } {\colortbl; \red0\green0\blue0; } {\info {\author Biblio 7.x}{\operator }{\title Biblio RTF Export}} \f1\fs24 \paperw11907\paperh16839 \pgncont\pgndec\pgnstarts1\pgnrestart X. -song Ma, Dakic, B., Kropatsche, S., Naylor, W., Chan, Y. -hao, Gong, Z. - X., Duan, L. -ming, Zeilinger, A., and Walther, P., ?Photonic quantum simulation of ground state configurations of Heisenberg square and checkerboard lattice spin systems?, 2012.\par \par }