SCIENCE - Beyond quantum simulation: Physicists create 'crystal' of spin-swapping ultracold molecules

Physicists have created a crystal-like arrangement of ultracold gas molecules that swap quantum "spin" properties with nearby and distant partners. The novel structure might be used to simulate or even invent new materials that derive exotic properties from quantum spin behavior, for electronics or other practical applications ...

http://www.sciencedaily.com/releases/2013/09/130918132444.ht