Geometric phase of three-level systems in interferometry.
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.
Sanders
B C
BC
Department of Physics, Macquarie University, Sydney, New South Wales, Australia.
de Guise
H
H
Bartlett
S D
SD
Zhang
W
W