Representation of entanglement by negative quasi-probabilities

Details Representation of entanglement by negative quasi-probabilities Representation of entanglement by negative quasi-probabilities

2008-11-27

arxiv.org/abs/0811.4527v3

Phys. Rev. A 79, 042337 (2009)

Physics

Quantum Physics

9 pages, 2 figures; An optimization procedure for the quasi-probabilities has been added

Scientific paper

Any bipartite quantum state has quasi-probability representations in terms of separable states. For entangled states these quasi-probabilities necessarily exhibit negativities. Based on the general structure of composite quantum states, one may reconstruct such quasi-propabilities from experimental data. Because of ambiguity, the quasi-probabilities obtained by the bare reconstruction are insufficient to identify entanglement. An optimization procedure is introduced to derive quasi-probabilities with a minimal amount of negativity. Negativities of optimized quasi-probabilities unambiguously prove entanglement, their positivity proves separability.

Affiliated with

Also associated with

No associations

Rating

Representation of entanglement by negative quasi-probabilities 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 Representation of entanglement by negative quasi-probabilities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Representation of entanglement by negative quasi-probabilities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-232695