Composite Geometric Phase for Multipartite Entangled States

Details Composite Geometric Phase for Multipartite Entangled States Composite Geometric Phase for Multipartite Entangled States

2007-02-08

arxiv.org/abs/quant-ph/0702080v2

Phys. Rev. A 76, 032115 (2007)

Physics

Quantum Physics

4 pages, 1 figure, improved presentation, results and conclusions unchanged from v1. Accepted for publication in PRA

Scientific paper

10.1103/PhysRevA.76.032115

When an entangled state evolves under local unitaries, the entanglement in the state remains fixed. Here we show the dynamical phase acquired by an entangled state in such a scenario can always be understood as the sum of the dynamical phases of its subsystems. In contrast, the equivalent statement for the geometric phase is not generally true unless the state is separable. For an entangled state an additional term is present, the mutual geometric phase, that measures the change the additional correlations present in the entangled state make to the geometry of the state space. For $N$ qubit states we find this change can be explained solely by classical correlations for states with a Schmidt decomposition and solely by quantum correlations for W states.

Affiliated with

Also associated with

No associations

Rating

Composite Geometric Phase for Multipartite Entangled States does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Composite Geometric Phase for Multipartite Entangled States, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite Geometric Phase for Multipartite Entangled States will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-433429