Quantum information approach to the azurite mineral frustrated quantum magnet

被引：4

作者：

Batle, J. ^{[1
]}

Ooi, C. H. Raymond ^{[2
]}

Abutalib, M. ^{[3
]}

Farouk, Ahmed ^{[4
]}

Abdalla, S. ^{[5
]}

机构：

[1] Univ Illes Balears, Dept Fis, Palma De Mallorca 07122, Balearic Island, Spain

[2] Univ Malaya, Dept Phys, Kuala Lumpur 50603, Malaysia

[3] King Abdulaziz Univ, Fac Sci, Dept Phys, Al Faisaliah Campus, Jeddah, Saudi Arabia

[4] Al Zahra Coll Women, Dept Informat Technol, POB 3365, Muscat, Oman

[5] King Abdulaziz Univ, Fac Sci, Dept Phys, POB 80203, Jeddah 21589, Saudi Arabia

来源：

QUANTUM INFORMATION PROCESSING | 2016年 / 15卷 / 07期

关键词：

Nonlocality; Quantum phase transition; Quantum magnet; T-C SUPERCONDUCTORS; EQUILIBRIUM PHASE; BELL INEQUALITY; ENTANGLEMENT; STATES;

D O I：

10.1007/s11128-016-1317-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 < 1K.

引用

页码：2839 / 2850

页数：12

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