Quantify entanglement by concurrence hierarchy
量子物理
2009-11-07 v5
摘要
We define the concurrence hierarchy as d-1 independent invariants under local unitary transformations in d-level quantum system. The first one is the original concurrence defined by Wootters et al in 2-level quantum system and generalized to d-level pure quantum states case. We propose to use this concurrence hierarchy as measurement of entanglement. This measurement does not increase under local quantum operations and classical communication.
引用
@article{arxiv.quant-ph/0204041,
title = {Quantify entanglement by concurrence hierarchy},
author = {Heng Fan and Keiji Matsumoto and Hiroshi Imai},
journal= {arXiv preprint arXiv:quant-ph/0204041},
year = {2009}
}
备注
Revtex, 6 pages