K. Rama Koteswara Rao, Aditi Sen De, Ujjwal Sen, Hemant Katiyar, T. S. Mahesh, Anil Kumar
We report a nuclear magnetic resonance experiment, which simulates the quantum transverse Ising spin system in a triangular lattice and further show that the monogamy of quantum correlations can be used to distinguish between the frustrated and non-frustrated phases 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 confirms that the non-frustrated regime shows higher quantum correlations compared to the frustrated one.
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http://arxiv.org/abs/1301.1834
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