The Effect of Dipole-Dipole Interaction on Tripartite Entanglement in Different Cavities

Khan, Salman; Jan, Munsif

doi:10.1007/s10773-015-2789-6

Cited by 18 publications

(8 citation statements)

References 28 publications

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“…The dipolar spin system is useful in realizing and understanding various quantum phenomenon in solid-state systems such as nitrogen-vacancy centers in diamond [27,28], quantum spin systems [29,30] and rotational states of molecules [31]. Recently, it was predicted that other correlations beyond entanglement could endure decoherence [32][33][34][35][36]. Quantum dynamics of such two-qubit have also been quantitatively studied under different analytical approaches [37,38].…”

Section: Introductionmentioning

confidence: 99%

Intrinsic decoherence dynamics and dense coding in dipolar spin system

Khedif

Muthuganesan

2022

Appl. Phys. B

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The quantum decoherence is an ineluctable process when a quantum system interacts with its surrounding environment. Milburn's dynamical master equation, as a modified shape of the Schrödinger equation, is typically used to study the effects decoherence even without intervention of environment. We studied the temporal evolution of non-local correlations in a dipolar-coupled spin system under the influence of intrinsic decoherence. Primarily, the generation in correlations of Einstein-Podolsky-Rosen steering, measurement-induced non-locality (MIN) and entanglement in an uncorrelated initial system state were studied. Also, the effect of the intrinsic decoherence on the quality of the dense coding capacity dynamics for the dipolar-coupled spin system was examined. Our results highlight that the initial system's role in defining the quantum correlations' robustness, and we also brought out the impacts of system's parameters on the non-local correlations and the efficiency of dense coding process.

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Section: Introductionmentioning

confidence: 99%

Intrinsic decoherence dynamics and dense coding in dipolar spin system

Khedif

Muthuganesan

2022

Appl. Phys. B

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“…These aforementioned properties can be realized in many solid-state spin systems as quantum spin systems [ 42 , 43 ], rotational- states of molecules [ 44 ] and nitrogen vacancy-centers in diamond [ 45 , 46 ]. It has been demonstrated that, for dipolar spin interaction and 2-photon resonance between two qubits and a coherent cavity field, the dipolar interaction could contribute to resilience toward intrinsic decoherence and maintain a stronger correlations [ 47 , 48 , 49 , 50 , 51 ]. The dipole acts as a noise source in many physical systems, which degrades the quantum system properties [ 52 , 53 , 54 ].…”

Section: Introductionmentioning

confidence: 99%

Entropic Uncertainty for Two Coupled Dipole Spins Using Quantum Memory under the Dzyaloshinskii–Moriya Interaction

Khedr

Mohamed

Abdel‐Aty

et al. 2021

Entropy

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In the thermodynamic equilibrium of dipolar-coupled spin systems under the influence of a Dzyaloshinskii–Moriya (D–M) interaction along the z-axis, the current study explores the quantum-memory-assisted entropic uncertainty relation (QMA-EUR), entropy mixedness and the concurrence two-spin entanglement. Quantum entanglement is reduced at increased temperature values, but inflation uncertainty and mixedness are enhanced. The considered quantum effects are stabilized to their stationary values at high temperatures. The two-spin entanglement is entirely repressed if the D–M interaction is disregarded, and the entropic uncertainty and entropy mixedness reach their maximum values for equal coupling rates. Rather than the concurrence, the entropy mixedness can be a proper indicator of the nature of the entropic uncertainty. The effect of model parameters (D–M coupling and dipole–dipole spin) on the quantum dynamic effects in thermal environment temperature is explored. The results reveal that the model parameters cause significant variations in the predicted QMA-EUR.

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“…The presence of the MDI in several physical systems that have properties of coherence and quantum correlations, such as spins systems [30][31][32], nitrogen vacancy centers in diamond [33,34], and rotational states of molecules [35], has motivated research in the context of Quantum Information Science in order to analyze the usefulness of the MDI in the application of resources for the execution of quantum gates for quantum computing [35,36], quantum simulation execution [37], realization of quantum channels for quantum communication, besides stimulating the investigation of quantum properties of Gibbs thermal states [38][39][40] and the dynamics of quantum correlations and entanglement [23,[41][42][43][44][45]. More recently, it has been shown that, for dipole-dipole interaction and two-photon resonance between two qubits and a coherent cavity field, the dipolar interaction can contribute to robustness against intrinsic decoherence and preserve a higher entanglement rate [46].…”

Section: Introductionmentioning

confidence: 99%

Aspects of quantum states asymmetry for the magnetic dipolar interaction dynamics

Pinto,

Maziero

2021

Preprint

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We investigate the asymmetry properties of quantum states in relation to the Hamiltonian responsible for the magnetic dipolar interaction (MDI) dynamics, and we evaluate its relationship to entanglement production. We consider some classes of pure and mixed quantum states of two qubits evolved under MDI and, using the asymmetry measure defined via the Wigner-Yanase skew information, we describe the asymmetry dependence on the Hamiltonian parameters and initial conditions of the system. In addition, we define and calculate the dynamics of the asymmetry of local states, characterizing their temporal and interaction parameters dependence. Finally, because the MDI Hamiltonian has a null eigenvalue, the group generator-based asymmetry measure does not adequately quantify the state susceptibility with respect to the action of the subspace generated by the eigenvectors associated with this eigenvalue. For this reason, we also define and study the group element-based asymmetry measure with relation to the unitary operator associated with the MDI Hamiltonian.

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The Effect of Dipole-Dipole Interaction on Tripartite Entanglement in Different Cavities

Cited by 18 publications

References 28 publications

Intrinsic decoherence dynamics and dense coding in dipolar spin system

Intrinsic decoherence dynamics and dense coding in dipolar spin system

Entropic Uncertainty for Two Coupled Dipole Spins Using Quantum Memory under the Dzyaloshinskii–Moriya Interaction

Aspects of quantum states asymmetry for the magnetic dipolar interaction dynamics

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