On the optimal measurement for quantum discord of two-qubit states

Details On the optimal measurement for quantum discord of two-qubit states On the optimal measurement for quantum discord of two-qubit states

2011-10-31

arxiv.org/abs/1110.6681v1

Physics

Quantum Physics

6 pages, 4 figures

Scientific paper

We present an efficient method to solve the quantum discord of two-qubit X states exactly. A geometric picture is used to clarify whether and when the general POVM measurement is superior to von Neumann measurement. We show that either the von Neumann measurement or the three-element POVM measurement is optimal, and more interestingly, in the latter case the components of the postmeasurement ensemble are invariant for a class of states.

Affiliated with

Also associated with

No associations

Rating

On the optimal measurement for quantum discord of two-qubit 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 On the optimal measurement for quantum discord of two-qubit states, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the optimal measurement for quantum discord of two-qubit states will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-147071