Entanglement and quantum discord in the cavity QED models [PDF]
Heliyon, 2023 We investigate the quantum correlation between light and matter in bipartite quantum systems, drawing on the Jaynes–Cummings model and the Tavis–Cummings model, which are well-established in cavity quantum electrodynamics.
Hui-hui Miao, Wanshun Li
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The tripartite quantum-memory-assisted entropic uncertainty relation and upper bound on shareability of quantum discord [PDF]
Scientific Reports, 2022 Quantum discord and quantum uncertainty are two important features of the quantum world. In this work, the relation between entropic uncertainty relation and the shareability of quantum discord is studied.
Hazhir Dolatkhah +2 more
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Measuring quantum discord at the LHC [PDF]
Journal of High Energy PhysicsThere has been an increasing interest in exploring quantities associated with quantum information at colliders. We perform a detailed analysis describing how to measure the quantum discord in the top anti-top quantum state at the Large Hadron Collider ...
Tao Han +3 more
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Mutual Information and Quantum Discord in Quantum State Discrimination with a Fixed Rate of Inconclusive Outcomes. [PDF]
Entropy (Basel), 2021 We studied the mutual information and quantum discord that Alice and Bob share when Bob implements a discrimination with a fixed rate of inconclusive outcomes (FRIO) onto two pure non-orthogonal quantum states, generated with arbitrary a priori ...
Jiménez O +3 more
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Quantum Discord, Thermal Discord, and Entropy Generation in the Minimum Error Discrimination Strategy [PDF]
Entropy, 2019 We study the classical and quantum correlations in the minimum error discrimination (ME) of two non-orthogonal pure quantum states. In particular, we consider quantum discord, thermal discord and entropy generation.
Omar Jiménez +3 more
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Dynamics of quantum discord of two coupled spin-1/2’s subjected to time-dependent magnetic fields [PDF]
Results in Physics, 2019 We describe the dynamics of quantum discord of two interacting spin-1/2’s subjected to controllable time-dependent magnetic fields. The exact time evolution of discord is given for various input mixed states consisting of classical mixtures of two Bell ...
Roberto Grimaudo +4 more
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Quantum discord of thermal two-photon orbital angular momentum state: mimicking teleportation to transmit an image. [PDF]
Light Sci Appl, 2021 We formulate a density matrix to fully describe two-photon state within a thermal light source in the photon orbital angular momentum (OAM) Hilbert space. We prove the separability, i.e., zero entanglement of the thermal two-photon state.
Chen L.
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Behavior of quantum discord, local quantum uncertainty, and local quantum Fisher information in two-spin-1/2 Heisenberg chain with DM and KSEA interactions [PDF]
Quantum Information Processing, 2022 A two-qubit Heisenberg XYZ model with Dzyaloshinsky–Moriya (DM) and Kaplan–Shekhtman–Entin-Wohlman–Aharony (KSEA) interactions is considered at thermal equilibrium. Analytical formulas are derived for the local quantum uncertainty (LQU) and local quantum
А. В. Федорова +1 more
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Monogamy of quantum discord [PDF]
Quantum Science and Technology, 2021 The original quantum discord (QD) is shown to be not monogamous except for the three-qubit states. Recently, a complete monogamy relation for multiparty quantum system was established for entanglement in (Guo and Zhang 2020 Phys. Rev.
Yu Guo, Lizhong Huang, Yang Zhang
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Squeezing of Primordial Gravitational Waves as Quantum Discord [PDF]
Universe, 2020 We investigate the squeezing of primordial gravitational waves (PGWs) in terms of quantum discord. We construct a classical state of PGWs without quantum discord and compare it with the Bunch−Davies vacuum.
Akira Matsumura, Yasusada Nambu
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