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Quantum Correlations and Bell Inequality Violation under Decoherence
Version 1
: Received: 11 May 2017 / Approved: 12 May 2017 / Online: 12 May 2017 (05:30:28 CEST)
How to cite: Erol, V. Quantum Correlations and Bell Inequality Violation under Decoherence. Preprints 2017, 2017050103. https://doi.org/10.20944/preprints201705.0103.v1 Erol, V. Quantum Correlations and Bell Inequality Violation under Decoherence. Preprints 2017, 2017050103. https://doi.org/10.20944/preprints201705.0103.v1
Abstract
Quantum Correlations are studied extensively in quantum information domain. Entanglement Measures and Quantum Discord are good examples of these actively studied correlations. Detection of violation in Bell inequalities is also a widely active area in quantum information theory world. In this work, we revisit the problem of analyzing the behavior of quantum correlations and violation of Bell inequalities in noisy channels. We extend the problem defined in [1] by observing the changes in negativity measure, quantum discord and a modified version of Horodecki measure for violation of Bell inequalities under amplitude damping, phase damping and depolarizing channels. We report different interesting results for each of these correlations and measures. All these correlations and measures decrease under decoherence channels, but some changes are very dramatical comparing to others. We investigate also separability conditions of example studied states.
Keywords
negativity; quantum discord; violation of bell inequalities; decoherence
Subject
Physical Sciences, Quantum Science and Technology
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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