# Quantum information approach to the azurite mineral frustrated quantum magnet

Quantum information approach to the azurite mineral frustrated quantum magnet 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 $$T_c < 1\,\mathrm{K}$$ T c < 1 K . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

# Quantum information approach to the azurite mineral frustrated quantum magnet

, Volume 15 (7) – Apr 26, 2016
12 pages

/lp/springer_journal/quantum-information-approach-to-the-azurite-mineral-frustrated-quantum-99uXvc4oyj
Publisher
Springer Journals
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-016-1317-9
Publisher site
See Article on Publisher Site

### 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 $$T_c < 1\,\mathrm{K}$$ T c < 1 K .

### Journal

Quantum Information ProcessingSpringer Journals

Published: Apr 26, 2016

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