Geometrical Quantum Discord Dynamics in a Two-Dimensional Coupled Cavities System
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-016-3204-7
Abstract: In this paper we studied the dynamics of the geometric quantum discord (GQD) in the two-dimensional coupled cavities system, composed of four single-mode cavities, each of which holds one two-level atom and is placed at… read more here.
Keywords: cavities system; two dimensional; cavity; dimensional coupled ... See more keywords
Geometric Measure of Quantum Discord for Entanglement of Total Dirac Fields in Noninertial Frames
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DOI: 10.1007/s10773-016-3251-0
Abstract: We study the geometric measure of quantum discord of total Dirac fields in noninertial frames. As a comparison, we also calculate the corresponding geometric measure of entanglement of the same system. We discuss the properties… read more here.
Keywords: measure quantum; geometric measure; measure; quantum discord ... See more keywords
Quantum Discord of two Coupled Qubits with Initial System-reservoir Correlation
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DOI: 10.1007/s10773-017-3298-6
Abstract: Recently, the effect of initial qubit-reservoir correlation for two qubits in a common reservoir on the entanglement dynamics has been studied by Yan and Xia (Acta Sinica Quantum Optica 20, 16 2014). We extend their… read more here.
Keywords: initial qubit; quantum discord; reservoir correlation;
Quantum Discord and Logarithmic Negativity in the Generalized n-qubit Werner State
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DOI: 10.1007/s10773-020-04663-2
Abstract: Quantum Discord (QD) is a measure of the total quantum non-local correlations of a quantum system. The formalism of quantum discord has been applied to various two-qubit mixed states and it has been reported that… read more here.
Keywords: state; quantum; quantum discord; generalized qubit ... See more keywords
Quantum Discord for Information Transmission Using Coherent States
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DOI: 10.1007/s10946-018-9748-7
Abstract: We suggest theoretically the possibility to transmit information through a decohering quantum channel employing Glauber’s coherent states. In fact, we study the dynamics of quantum correlations of two-mode entangled bipartite coherent states in the presence… read more here.
Keywords: information; quantum discord; information transmission; coherent states ... See more keywords
Super quantum discord for general two qubit X states
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DOI: 10.1007/s11128-017-1547-5
Abstract: The exact solutions of the super quantum discord are derived for general two qubit X states in terms of a one-variable function. Several exact solutions of the super quantum discord are given for the general… read more here.
Keywords: quantum; general two; two qubit; super quantum ... See more keywords
Extremal properties of conditional entropy and quantum discord for XXZ, symmetric quantum states
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DOI: 10.1007/s11128-017-1701-0
Abstract: For the XXZ subclass of symmetric two-qubit X states, we study the behavior of quantum conditional entropy $$S_{cond}$$Scond as a function of measurement angle $$\theta \in [0,\pi /2]$$θ∈[0,π/2]. Numerical calculations show that the function $$S_{cond}(\theta… read more here.
Keywords: theta; quantum; quantum discord; conditional entropy ... See more keywords
Can quantum discord increase in a quantum communication task?
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DOI: 10.1007/s11128-018-2019-2
Abstract: Quantum teleportation of an unknown quantum state is one of the few communication tasks which has no classical counterpart. Usually the aim of teleportation is to send an unknown quantum state to a receiver. But… read more here.
Keywords: communication; quantum; quantum discord; quantum state ... See more keywords
Quantum discord based on linear entropy and thermal negativity of qutrit–qubit mixed spin chain under the influence of external magnetic field
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DOI: 10.1007/s11128-020-02754-x
Abstract: We propose a reliable analytical method to evaluate the non-classical correlations based on linear entropy for an arbitrary qudit–qubit quantum state. The linear entropy is used to overcome the difficulty of the maximization of the… read more here.
Keywords: quantum; linear entropy; entropy; quantum discord ... See more keywords
Tripartite quantum discord dynamics in qubits driven by the joint influence of distinct classical noises
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DOI: 10.1007/s11128-020-02967-0
Abstract: We investigate the dynamics of quantum discord in a system of three non-interacting qubits, initially entangled in a Greenberger–Horne–Zeilinger state, in the presence of mixed classical environments. Precisely, the joint impacts of a static noise… read more here.
Keywords: dynamics qubits; discord; quantum discord; discord dynamics ... See more keywords
Critical behavior of geometric measure of quantum discord when approaching the critical points via different paths
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DOI: 10.1016/j.cjph.2018.12.004
Abstract: Abstract We investigate the critical behavior of geometric measure of quantum discord (GMQD) in a one-dimensional transverse XY spin chain. The critical and the scaling behavior of the ground state GMQD are investigated both at… read more here.
Keywords: geometric measure; measure quantum; quantum discord; behavior geometric ... See more keywords