The decay of quantum correlations between quantum dot spin qubits and the characteristics of its magnetic-field dependence
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10283181" target="_blank" >RIV/00216208:11320/14:10283181 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1209/0295-5075/107/67004" target="_blank" >http://dx.doi.org/10.1209/0295-5075/107/67004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1209/0295-5075/107/67004" target="_blank" >10.1209/0295-5075/107/67004</a>
Alternative languages
Result language
angličtina
Original language name
The decay of quantum correlations between quantum dot spin qubits and the characteristics of its magnetic-field dependence
Original language description
We address the question of the role of quantum correlations beyond entanglement in the context of quantum magnetometry. We study the evolution of the rescaled variant of the geometric quantum discord of two electron-spin qubits interacting with an environment of nuclear spins via the hyperfine interaction. We have found that quantum correlations display a strong magnetic-field sensitivity which can be utilized for decoherence-driven measurements of the external magnetic field. The discord-based measurement is sensitive to a wider range of magnetic-field values than the entanglement-based measurement, including very small fields which are inaccessible via entanglement. Copyright (C) EPLA, 2014
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Europhysics Letters
ISSN
0295-5075
e-ISSN
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Volume of the periodical
107
Issue of the periodical within the volume
6
Country of publishing house
FR - FRANCE
Number of pages
6
Pages from-to
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UT code for WoS article
000343125400021
EID of the result in the Scopus database
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