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Entanglement witnesses with tensor networks: characterizing entanglement in large systems
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE FÍSICAPrograma de Pós-Graduação em FísicaUFMG, 2019-08-02)
Emaranhamento é certamente um dos fenômenos mais fascinantes observados na Natureza, e mesmo após de décadas de pesquisas na teoria de emaranhamento ainda há muito a ser descoberto e entendido. Em particular, ainda há ...
Thermal entanglement witness for materials with variable local spin lengths
(American Physical Society, 2013)
Entanglement entropy as a witness of the Aharonov-Bohm effect in QFT
(IOP Publishing, 2015-03-18)
We study the dependence of the entanglement entropy with a magnetic flux and show that the former quantity witnesses an Aharonov–Bohm-like effect. In particular, we consider free charged scalar and Dirac fields living on ...
Witnessing spin-orbit thermal entanglement in rare-earth ions
(EDP SciencesLes Ulis, 2013-08)
We explore spin-orbit thermal entanglement in rare-earth ions, based on a witness obtained from mean energies. The entanglement temperature TE, below which entanglement emerges, is found to be thousands of kelvins above ...
Non-Markovianity quantifier of an arbitrary quantum process
(2017-12-12)
Calculating the degree of non-Markovianity of a quantum process, for a high-dimensional system, is a difficult task given complex maximization problems. Focusing on the entanglement-based measure of non-Markovianity we ...
A formalism for steering with local quantum measurements
(2018-08-01)
We develop a unified approach to classical, quantum and post-quantum steering. The framework is based on uncharacterised (black-box) parties performing quantum measurements on their share of a (possibly unphysical) quantum ...
Entanglement and classical fluctuations at finite-temperature critical points
(IOP Publishing, 2020-03-20)
We investigate several entanglement-related quantities at finite-temperature criticality in the three-dimensional quantum spherical model, both as a function of temperature T and of the quantum parameter g, which measures ...
Quantum Bounds On Multiplayer Linear Games And Device-independent Witness Of Genuine Tripartite Entanglement
(American Physical Society, 2016)