Estimating the spectrum of a density operator

Details Estimating the spectrum of a density operator Estimating the spectrum of a density operator

2001-02-05

arxiv.org/abs/quant-ph/0102027v1

Physics

Quantum Physics

4 Pages, RevTeX, one figure

Scientific paper

10.1103/PhysRevA.64.052311

Given N quantum systems prepared according to the same density operator \rho, we propose a measurement on the N-fold system which approximately yields the spectrum of \rho. The projections of the proposed observable decompose the Hilbert space according to the irreducible representations of the permutations on N points, and are labeled by Young frames, whose relative row lengths estimate the eigenvalues of \rho in decreasing order. We show convergence of these estimates in the limit N\to\infty, and that the probability for errors decreases exponentially with a rate we compute explicitly.

Affiliated with

Also associated with

No associations

Rating

Estimating the spectrum of a density operator 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 spectrum of a density operator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimating the spectrum of a density operator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-104898