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Document Details
Document Type
:
Article In Journal
Document Title
:
Persistence of quantum correlations in a XY spin-chain environment
Persistence of quantum correlations in a XY spin-chain environment
Subject
:
physics
Document Language
:
English
Abstract
:
Quantum correlations in a physical system are usually degraded whenever there is an interaction with the environment. Here we consider the action of a XY spin-chain interacting with a system of two qubits. Results are surprising for particular families of states since their evolution does not destroy the presence of either entanglement or nonlocality, that is, those correlations persist for any possible configuration of the environment. In addition, we unveil the form of those states which, although being mixed, their entanglement implies nonlocality and vice versa. This finding constitutes an extension of the well-known Gisin Theorem for pure states of two qubits. The ensuing form will enable us to find the evolved entanglement and nonlocality in an analytical fashion.
ISSN
:
1434-6028
Journal Name
:
EUROPEAN PHYSICAL JOURNAL B
Volume
:
89
Issue Number
:
11
Publishing Year
:
1437 AH
2016 AD
Article Type
:
Article
Added Date
:
Tuesday, August 8, 2017
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
Josep Batle
Batle, Josep
Investigator
Doctorate
jbv276@uib.es
Mymona Abutalib
Abutalib, Mymona
Researcher
Doctorate
Soliman Abdalla,
Abdalla,, Soliman
Researcher
Doctorate
Ahmed Farooq
Farooq, Ahmed
Researcher
Doctorate
Files
File Name
Type
Description
42515.pdf
pdf
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