Characterization of entanglement using sum uncertainty relations for N-level systems
量子物理
2007-05-23 v1
摘要
The efficient experimental verification of entanglement requires an identification of the essential physical properties that distinguish entangled states from non-entangled states. Since the most characteristic feature of entanglement is the extreme precision of correlations between spatially separated systems, we propose a quantitative criterion based on local uncertainty relations (quant-ph/0212090). Some basic sum uncertainty relations for N-level systems are introduced and the amount of entanglement that can be verified by violations of the corresponding local uncertainty limit is discussed.
引用
@article{arxiv.quant-ph/0305002,
title = {Characterization of entanglement using sum uncertainty relations for N-level systems},
author = {Holger F. Hofmann and Shigeki Takeuchi},
journal= {arXiv preprint arXiv:quant-ph/0305002},
year = {2007}
}
备注
6 pages, contribution to the proceedings of QIT8, held June 30th to July 2nd 2003 in Sapporo