Synchronous concentration and purification schemes of arbitrary unknown hyperentangled mixed states
Quantum Physics
2014-06-24 v2
Abstract
We present two efficient schemes which can simultaneously accomplish hyperentanglement concentration and purification for two-photon four-qubit systems in an unknown partially hyperentangled mixed states. The first can correct errors in the polarization entanglement and extract maximal hyperentanglement in polarization and spatial mode with additional partial frequency entanglement. The second uses additional maximal frequency entanglement to purify and concentrate hyperentanglement in polarization and spatial mode deterministically. Both of the two schemes are only based on existing optical devices and cross-Kerr nonlinearities.
Keywords
Cite
@article{arxiv.1401.3051,
title = {Synchronous concentration and purification schemes of arbitrary unknown hyperentangled mixed states},
author = {Kun Du and Qiu-Cheng Song and Cong-Feng Qiao},
journal= {arXiv preprint arXiv:1401.3051},
year = {2014}
}
Comments
13 pages, 6 figures