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Quantum Discord for Three-qubit Extended X-states
In this paper, we investigate the quantum discord for a family of three-qubit extended X-states and give analytic formulas of the quantum discord for...
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Classical optical analogue of quantum discord
Quantum discord has been shown to be a resource for quantum advantage in addition to quantum entanglement. While many experiments have demonstrated...
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Geometric quantum discord signals non-factorization
We propose the information-theoretic quantity of geometric quantum discord (GQD) as an indicator of the factorization properties of a given quantum...
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On super quantum discord for high-dimensional bipartite state
By quantifying the difference between quantum mutual information through weak measurement performed on a subsystem one is led to the notion of super...
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Global Quantum Discord and Entanglement in two Coupled Double Quantum Dots AlGaAs/GaAs
This work presents a theoretical study on the behavior of global quantum discord and entanglement in two coupled double quantum dots made of...
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Classifying quantum steering, entanglement, and discord for continuous variables in Schwarzschild spacetime
Quantum steering, entanglement, and discord often deal with different relativistic quantum information tasks. It is necessary, therefore, to classify...
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Nonclassical Correlations Via Sharma–Mittal Quantum Discord in Heisenberg XYZ Model With Dzyaloshinskii–Moriya Interaction
In this paper, we study quantum correlations in a Heisenberg XYZ model with the Dzyaloshinskii–Moriya interaction based on the Sharma–Mittal quantum...
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Genuine tripartite entanglement and geometric quantum discord in entangled three-body Unruh–DeWitt detector system
We studied the quantum correlations of a three-body Unruh–DeWitt detector system using genuine tripartite entanglement (GTE) and geometric quantum...
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Quantum Discord Fraction
As an analogy of the entangled fraction and coherence fraction, we have introduced the notion of quantum discord fraction, which quantifies the...
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Sharma-Mittal Quantum Discord in a Two-Qubit Heisenberg XXX Spin-1/2 Chain Under DM And KSEA Interactions
A two-qubit Heisenberg XXX spin chain is considered in the presence of Dzyaloshinskii-Moriya (DM) and Kaplan-Shekhtman-Entin-Wohlman-Aharony (KSEA)...
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Local quantum uncertainty and non-commutativity measure discord in two-mode photon-added entangled coherent states
In this paper, we investigate quantum correlations in entangled coherent states with photon added, which are produced by the creation operator acting...
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Intrinsic decoherence effects on correlated coherence and quantum discord in XXZ Heisenberg model
Spin qubits are at the heart of technological advances in quantum processors and offer an excellent framework for quantum information processing....
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Monogamy of Quantum Discord for Multiqubit Systems
We explore the monogamy of multipartite quantum discord. In the article [Quantum Science and Technology 6, 4, 045028], Guo et al. show that quantum...
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Gaussian quantum discord and the monogamy relation in de Sitter space
We study the influence of a two-mode Gaussian state under the Gaussian channel that describes the curvature effect in de Sitter space. Interestingly,...
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Relations between the quantum correlation entropy and quantum discord for X-states in multipartite systems
Observational entropy is a generalization of Boltzmann entropy to quantum mechanics. Observational entropy based on coarse-grained measurements has a...
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Environment-assisted quantum discord in the chromophores network of light-harvesting complexes
We discover an environment-assisted quantum discord mechanism (ENAQD), similar to the phenomenon termed environment-assisted quantum transport...
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Geometric Discord of GHZ State under Decoherence
Geometric discord is an essential method to measure quantum correlations. It is significative to investigate how geometric discord of GHZ state is...
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Upper Bounds of Quantum Discord for Certain Two-qudit States with Maximally Mixed Marginals
Quantum discord is a measure of quantumness of correlations in bipartite states, which characterizes the difference between quantum mutual...
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Maximizing quantum discord from interference in multi-port fiber beamsplitters
Fourth-order interference is an information processing primitive for photonic quantum technologies, as it forms the basis of photonic...
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Geometric discord for multiqubit systems
Radhakrishnan et al. (Phys. Rev. Lett. 124:110401, 2020) proposed quantum discord to multipartite systems and derived explicit formulae for any...
