1.
Phys Rev Lett
; 86(3): 369-72, 2001 Jan 15.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11177833
RESUMO
We present the first scheme for producing and measuring an Abelian geometric phase shift in a three-level system where states are invariant under a non-Abelian group. In contrast to existing experiments and proposals for experiments, based on U(1)-invariant states, our scheme geodesically evolves U(2)-invariant states in a four-dimensional SU(3)/U(2) space and is physically realized via a three-channel optical interferometer.
2.