Quantum information approach to the azurite mineral frustrated quantum magnet
Document Type
Article
Publication Date
1-1-2016
Abstract
Quantum correlations are almost impossible to address in bulk systems. Quantum measures extended only to a few number of parties can be discussed in practice. In the present work, we study nonlocality for a cluster of spins belonging to a mineral whose structure is that of a quantum magnet. We reproduce at a much smaller scale the experimental outcomes, and then, we study the role of quantum correlations there. A macroscopic entanglement witness has been introduced in order to reveal nonlocal quantum correlations between individual constituents of the azurite mineral at nonzero temperatures. The critical point beyond which entanglement is zero is found at Tc<1K.
Keywords
Nonlocality, Quantum phase transition, Quantum magnet
Divisions
PHYSICS
Funders
Ministry of Education Malaysia: High Impact Research MoE Grant UM.C/625/1/HIR/MoE/CHAN/04
Publication Title
Quantum Information Processing
Volume
15
Issue
7
Publisher
Springer Verlag (Germany)