Fadel, Matteo and Tura, Jordi. (2018) Bell Correlations at finite temperature. Quantum, 2. p. 107.
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Official URL: https://edoc.unibas.ch/68796/
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Abstract
We show that spin systems with infinite-range interactions can violate at thermal equilibrium a multipartite Bell inequality, up to a finite critical temperature Tc. Our framework can be applied to a wide class of spin systems and Bell inequalities, to study whether nonlocality occurs naturally in quantum many-body systems close to the ground state. Moreover, we also show that the low-energy spectrum of the Bell operator associated to such systems can be well approximated by the one of a quantum harmonic oscillator, and that spin-squeezed states are optimal in displaying Bell correlations for such Bell inequalities.
Faculties and Departments: | 05 Faculty of Science > Departement Physik > Physik > Experimentelle Nanophysik (Treutlein) |
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UniBasel Contributors: | Fadel, Matteo |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
e-ISSN: | 2521-327X |
Note: | Publication type according to Uni Basel Research Database: Journal article |
Identification Number: | |
Last Modified: | 16 Oct 2019 13:36 |
Deposited On: | 11 Oct 2019 11:52 |
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