Monogamy of quantum correlations reveals frustration in a quantum Ising spin system: Experimental demonstration
Abstract
We report a nuclear magnetic resonance experiment, which simulates the quantum transverse Ising spin system in a triangular configuration and further show that the monogamy of quantum correlations can be used to distinguish between the frustrated and non-frustrated regimes in the ground state of this system. Adiabatic state preparation methods are used to prepare the ground states of the spin system. We employ two different multipartite quantum correlation measures to analyze the experimental ground state of the system in both the frustrated and non-frustrated regimes. In particular, we use multipartite quantum correlation measures generated by monogamy considerations of negativity, a bipartite entanglement measure, and that of quantum discord, an information-theoretic quantum correlation measure. As expected from theoretical predictions, the experimental data confirm that the non-frustrated regime shows higher multipartite quantum correlations compared to the frustrated one.
Keywords
Cite
@article{arxiv.1301.1834,
title = {Monogamy of quantum correlations reveals frustration in a quantum Ising spin system: Experimental demonstration},
author = {K. Rama Koteswara Rao and Hemant Katiyar and T. S. Mahesh and Aditi Sen De and Ujjwal Sen and Anil Kumar},
journal= {arXiv preprint arXiv:1301.1834},
year = {2013}
}
Comments
Title in the published version is "Multipartite quantum correlations reveal frustration in a quantum Ising spin system", 7 pages, 4 figures