Mølmer, KlausSørensen, Anders S.2004-12-142004-12-1420012001http://hdl.handle.net/2003/1903710.17877/DE290R-6789enThe American Physical SocietyPhysical Review Letters530Entanglement and Extreme Spin Squeezing10.1103/PhysRevLett.86.4431article (journal)