Optimal minimal measurements of mixed states

Details Optimal minimal measurements of mixed states Optimal minimal measurements of mixed states

1998-12-23

arxiv.org/abs/quant-ph/9812068v2

Phys.Rev. A60 (1999) 126

Physics

Quantum Physics

20 pages, no figures

Scientific paper

10.1103/PhysRevA.60.126

The optimal and minimal measuring strategy is obtained for a two-state system prepared in a mixed state with a probability given by any isotropic a priori distribution. We explicitly construct the specific optimal and minimal generalized measurements, which turn out to be independent of the a priori probability distribution, obtaining the best guesses for the unknown state as well as a closed expression for the maximal mean averaged fidelity. We do this for up to three copies of the unknown state in a way which leads to the generalization to any number of copies, which we then present and prove.

Affiliated with

Also associated with

No associations

Rating

Optimal minimal measurements of mixed 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 Optimal minimal measurements of mixed states, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimal minimal measurements of mixed states will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-11277