Maximally entangled states in the Hydrogen molecule: The role of spin and correlation
Quantum Physics
2010-07-20 v1
Abstract
By going beyond Hubbard Hamiltonian we reflected correlation effects accurately in the wavefunctions of H2. Using ab initio e-e interaction parameters resulted maximally entangled ground and third excited states. We assigned this maximally entangled character to the nonmagnetic (S=0) property of these states and also the minimally entangled character of the first excited states to its magnetic property. By switching on a magnetic field an entangled state with Sz = 0 can be extracted from a minimally entangled degenerate magnetic state. We suggest that presence of a moderate correlated system and a non-magnetic (Sz = 0) electronic state can be two criteria for finding maximally entangled electronic states in a realistic molecular system.
Keywords
Cite
@article{arxiv.1007.3112,
title = {Maximally entangled states in the Hydrogen molecule: The role of spin and correlation},
author = {M. Babamoradi and M. Heidari Saani and M. A. Vesaghi},
journal= {arXiv preprint arXiv:1007.3112},
year = {2010}
}