Estimating the post-measurement state

Details Estimating the post-measurement state Estimating the post-measurement state

2002-10-30

arxiv.org/abs/quant-ph/0210205v1

Phys. Rev. A68 (2003) 34302-(4)

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.68.034302

We study generalized measurements (POVM measurements) on a single d-level quantum system which is in a completely unknown pure state, and derive the best estimate of the post-measurement state. The mean post-measuremement estimation fidelity of a generalized measurement is obtained and related to the operation fidelity of the device. This illustrates how the information gain about the post-measurement state and the corresponding state disturbance are mutually dependent. The connection between the best estimates of the pre- and post-measurement state is established and interpreted. For pure generalized measurements the two states coincide.

Affiliated with

Also associated with

No associations

Rating

Estimating the post-measurement state 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 Estimating the post-measurement state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimating the post-measurement state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-535155