Many-spin entanglement in multiple quantum NMR with a dipolar ordered initial state
Quantum Physics
2021-02-03 v1
Abstract
Multiple quantum (MQ) NMR with a dipolar ordered initial state opens new possibilities for the exploration of many-spin entanglement. In this paper, we investigate many-spin entanglement in a gas of spin-carrying molecules (atoms) in nanocavities in the conditions of MQ NMR with a dipolar ordered initial state. The second moment of the distribution of the intensities of MQ NMR coherences, which provides a lower bound on the quantum Fisher information, is used for an estimate of the number of the entangled spins. Many-spin entanglement is investigated at different temperatures and different numbers of spins.
Cite
@article{arxiv.2009.00889,
title = {Many-spin entanglement in multiple quantum NMR with a dipolar ordered initial state},
author = {Ilia D. Lazarev and Edward. B. Feldman},
journal= {arXiv preprint arXiv:2009.00889},
year = {2021}
}