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Entanglement Theory Quantum Correlations
Tomographic causal analysis of two-qubit states and tomographic discord
arXiv
Authors: Evgeny Kiktenko, Aleksey Fedorov
Year
2013
Paper ID
32626
Status
Preprint
Abstract Read
~2 min
Abstract Words
100
Citations
N/A
Abstract
We study a behavior of two-qubit states subject to tomographic measurement. We propose a novel approach to definition of asymmetry in quantum bipartite state based on its tomographic Shannon entropies. We consider two types of measurement bases: the first is one that diagonalizes density matrices of subsystems and is used in a definition of tomographic discord, and the second is one that maximizes Shannon mutual information and relates to symmetrical form quantum discord. We show how these approaches relate to each other and then implement them to the different classes of two-qubit states. Consequently, new subclasses of X-states are revealed.
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- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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- We study a behavior of two-qubit states subject to tomographic measurement.
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