Explicit product ensembles for separable quantum states
Quantum Physics
2015-06-26 v2
Abstract
We present a general method for constructing pure-product-state representations for density operators of quantum bits. If such a representation has nonnegative expansion coefficients, it provides an explicit separable ensemble for the density operator. We derive the condition for separability of a mixture of the Greenberger-Horne-Zeilinger state with the maximally mixed state.
Cite
@article{arxiv.quant-ph/9904109,
title = {Explicit product ensembles for separable quantum states},
author = {R. Schack and C. M. Caves},
journal= {arXiv preprint arXiv:quant-ph/9904109},
year = {2015}
}
Comments
15 pages, no figures