Self-assisted complete maximally hyperentangled state analysis via the cross-Kerr nonlinearity
Abstract
We present two complete maximally hyperentangled state analysis protocols for photons entangled in the polarization and spatial-mode degrees of freedom. The first protocol is a hyperentangled Bell state analysis scheme for two photons and the second is a hyperentangled Greenberger-Horne- Zeilinger (GHZ) state analysis scheme for three photons. In each scheme, a set of mutually orthogonal hyperentangled basis states are completely and deterministically discriminated with the aid of cross-Kerr nonlinearities and linear optics. We also generalize the schemes to unambiguously analyze the N-photon hyperentangled GHZ state. Compared with previous protocols, our schemes greatly simplify the discrimination process and reduce the requirements on nonlinearities by using the measured spatial-mode state to assist in the analysis of the polarization state. These advantages make our schemes useful for practical applications in long-distance high capacity quantum communication.
Keywords
Cite
@article{arxiv.1601.02029,
title = {Self-assisted complete maximally hyperentangled state analysis via the cross-Kerr nonlinearity},
author = {Xihan Li and Shohini Ghose},
journal= {arXiv preprint arXiv:1601.02029},
year = {2016}
}
Comments
8 pages, 3 figures