Entangled quantum states are an important element of quantum information techniques. We determine the requirements for states of quadrupolar nuclei with spins >1/2 to be entangled. It was shown that entanglement is achieved at low temperature by applying a magnetic field to a quadrupolar nuclei possess quadrupole moments, which interacts with the electricfield gradient produced by the charge distribution in their surroundings.
@article{arxiv.1008.0070,
title = {Entanglement in nuclear quadrupole resonance},
author = {Gregory Furman and Victor Meerovich and Vladimir Sokolovsky},
journal= {arXiv preprint arXiv:1008.0070},
year = {2015}
}