Quantum estimation via minimum Kullback entropy principle

Details Quantum estimation via minimum Kullback entropy principle Quantum estimation via minimum Kullback entropy principle

2007-08-07

arxiv.org/abs/0708.0956v3

Phys. Rev. A 76, 042120 (2007)

Physics

Quantum Physics

7 pages, slightly revised version, no figures

Scientific paper

10.1103/PhysRevA.76.042120

We address quantum estimation in situations where one has at disposal data from the measurement of an incomplete set of observables and some a priori information on the state itself. By expressing the a priori information in terms of a bias toward a given state the problem may be faced by minimizing the quantum relative entropy (Kullback entropy) with the constraint of reproducing the data. We exploit the resulting minimum Kullback entropy principle for the estimation of a quantum state from the measurement of a single observable, either from the sole mean value or from the complete probability distribution, and apply it as a tool for the estimation of weak Hamiltonian processes. Qubit and harmonic oscillator systems are analyzed in some details.

Affiliated with

Also associated with

No associations

Rating

Quantum estimation via minimum Kullback entropy principle 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 Quantum estimation via minimum Kullback entropy principle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum estimation via minimum Kullback entropy principle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-170652