Estimating the spectrum of a density matrix with LOCC
Quantum Physics
2007-05-23 v3
Abstract
The problem of estimating the spectrum of a density matrix is considered. Other problems, such as bipartite pure state entanglement, can be reduced to spectrum estimation. A local operations and classical communication (LOCC) measurement strategy is shown which is asymptotically optimal. This means that, for a very large number of copies, it becomes unnecessary to perform collective measurements which should be more difficult to implement in practice.
Cite
@article{arxiv.quant-ph/0506197,
title = {Estimating the spectrum of a density matrix with LOCC},
author = {Manuel A. Ballester},
journal= {arXiv preprint arXiv:quant-ph/0506197},
year = {2007}
}
Comments
12 pages, uses iopart.cls and iopart10.clo. Improved version. v3: Reference updated, added journal reference