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arXiv · 1210.0414

Quantum Correlations in a Few-Atom Spin-1 Bose-Hubbard Model

B. Çakmak·G. Karpat·Z. Gedik
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Abstract

We study the thermal quantum correlations and entanglement in spin-1 Bose-Hubbard model with two and three particles. While we use negativity to calculate entanglement, more general non-classical correlations are quantified using a new measure based on a necessary and sufficient condition for zero-discord state. We demonstrate that the energy level crossings in the ground state of the system are signalled by both the behavior of thermal quantum correlations and entanglement.

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B. Çakmak, G. Karpat, Z. Gedik. 2012-10-01. Quantum Correlations in a Few-Atom Spin-1 Bose-Hubbard Model. https://doi.org/10.1088/0031-8949%2F2013%2Ft153%2F014008

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