'Super atoms': Rydberg excitations form ordered structures in a quantum gas(phys.org)
phys.org
'Super atoms': Rydberg excitations form ordered structures in a quantum gas
http://phys.org/news/2012-11-super-atoms-rydberg-quantum-gas.html
http://phys.org/news/2012-11-super-atoms-rydberg-quantum-gas.html