Multipartite quantum correlations reveal frustration in a quantum Ising spin system

Rao, Rama Koteswara K and Katiyar, Hemant and Mahesh, TS and Sen (De), Aditi and Sen, Ujjwal and Kumar, Anil (2013) Multipartite quantum correlations reveal frustration in a quantum Ising spin system. In: PHYSICAL REVIEW A, 88 (2).

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Abstract

We report a nuclear magnetic resonance experiment, which simulates the quantum transverse Ising spin system in a triangular configuration, and further demonstrate that multipartite quantum correlations can be used to distinguish between the frustrated and the nonfrustrated 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 the nonfrustrated regimes. As expected from theoretical predictions, the experimental data confirm that the nonfrustrated regime shows higher multipartite quantum correlations compared to the frustrated one.

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW A
Publisher:	AMER PHYSICAL SOC
Additional Information:	Copyright of this article is belongs to
Department/Centre:	Division of Chemical Sciences > NMR Research Centre (Formerly Sophisticated Instruments Facility) Division of Physical & Mathematical Sciences > Physics
Date Deposited:	01 Oct 2013 11:26
Last Modified:	01 Oct 2013 11:26
URI:	http://eprints.iisc.ac.in/id/eprint/47347

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