Building multiparticle states with teleportation
摘要
We describe a protocol which can be used to generate any N-partite pure quantum state using Einstein-Podolsky-Rosen (EPR) pairs. This protocol employs only local operations and classical communication between the N parties (N-LOCC). In particular, we rely on quantum data compression and teleportation to create the desired state. This protocol can be used to obtain upper bounds for the bipartite entanglement of formation of an arbitrary N-partite pure state, in the asymptotic limit of many copies. We apply it to a few multipartite states of interest, showing that in some cases it is not optimal. Generalizations of the protocol are developed which are optimal for some of the examples we consider, but which may still be inefficient for arbitrary states.
引用
@article{arxiv.quant-ph/9906080,
title = {Building multiparticle states with teleportation},
author = {Ernesto Galvao and Lucien Hardy},
journal= {arXiv preprint arXiv:quant-ph/9906080},
year = {2008}
}
备注
11 pages, 1 figure. Version 2 contains an example for which protocol P3 is better than protocol P2. Correction to references in version 3