Generalized reduction criterion for separability of quantum states
摘要
A new necessary separability criterion that relates the structures of the total density matrix and its reductions is given. The method used is based on the realignment method [K. Chen and L.A. Wu, Quant. Inf. Comput. 3, 193 (2003)]. The new separability criterion naturally generalizes the reduction separability criterion introduced independently in previous work of [M. Horodecki and P. Horodecki, Phys. Rev. A 59, 4206 (1999)] and [N.J. Cerf, C. Adami and R.M. Gingrich, Phys. Rev. A 60, 898 (1999)]. In special cases, it recovers the previous reduction criterion and the recent generalized partial transposition criterion [K. Chen and L.A. Wu, Phys. Lett. A 306, 14 (2002)]. The criterion involves only simple matrix manipulations and can therefore be easily applied.
引用
@article{arxiv.quant-ph/0312185,
title = {Generalized reduction criterion for separability of quantum states},
author = {S. Albeverio and K. Chen and S. M. Fei},
journal= {arXiv preprint arXiv:quant-ph/0312185},
year = {2009}
}
备注
17 pages, 2 figures