Detraction of decoherence that arises from the acceleration process

Abd‐Rabbou, M. Y.; Ali, S. I.; Metwally, N.

doi:10.1364/josab.477867

Cited by 8 publications

(4 citation statements)

References 46 publications

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“…We define a diagonal matrix ρ dg abc for the three-qubit density matrix ρ abc by eliminating all off-diagonal entries. The relative entropy of coherence is defined as [44][45][46]:…”

Section: Tripartite Entanglement Negativitymentioning

confidence: 99%

The influence of Ohmic noise on the dynamics of three-spin open quantum system

Javed,

Salim,

Said

et al. 2024

Laser Phys.

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The dynamics of open quantum systems under decoherence effects remain a hotly debated topic in the case of the practical deployment of quantum information processing. In this regard, we examine how the three-qubit mixed state is affected by changes in the cut-off frequency of the Ohmic spectral density in a harmonic reservoir. Specifically, the degree of quantum memory-assisted entropic uncertainty (QMA-EU), along with the entanglement, coherence, and purity of the system, is to be demonstrated. A thorough exercise is done to investigate any underlying relationship between the three-qubit quantum characteristics. We show that a harmonic reservoir controlled by Ohmic noise prevails a monotonic-like decay in the current case where, sooner or later, the state becomes completely disentangled, decoherent, and mixed. The QMA-EU has always been found to have an increasing function causing the quantum resourcefulness to be reduced. Although, there is no pathway to avoid the Ohmic noise consequences and complete decay, however, we provided parameterization which would lead to prolonged preservation of quantum correlations with time. Finally, we provide various settings for the tuning of cut-off frequency regarding the Ohmic type bath and state parameters on the initial as well as final levels of quantum features.

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“…We define a diagonal matrix ρ dg abc for the three-qubit density matrix ρ abc by eliminating all off-diagonal entries. The relative entropy of coherence is defined as [44][45][46]:…”

Section: Tripartite Entanglement Negativitymentioning

confidence: 99%

The influence of Ohmic noise on the dynamics of three-spin open quantum system

Javed,

Salim,

Said

et al. 2024

Laser Phys.

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show abstract

“…In other words, it is a measure of how well the system can maintain its quantum properties without being disturbed by external influences. Coherence has been studied extensively in recent years and has been found to be essential for many quantum systems, such as, nonlinear SU (1, 1) quantum states [18], two-qubit system interacting with a deformed cavity [19], two coupled quantum dot molecules [20] and accelerated systems [21,22].…”

Section: Introductionmentioning

confidence: 99%

Depiction of an External Classical Field Effects on a Four-Level W-Configuration Atom Embedded in a Coherent Cavity Field

Ali

2023

Preprint

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This paper examines the dynamics of a W-configuration four-level atom in a quantized cavity field and the system driven by an external classical field. By applying some canonical transformations, we derive analytical solutions to the Schrdinger equation for the corresponding Hamiltonian. The effects of the external field parameters and detuning on the relative entropy of coherence, Wigner function, and Pancharatnam phase of the system are then analyzed. It is found that the external field parameter has a significant effect on the coherence of the system, while the detuning parameters may increase the maximum bounds of the coherence. In addition, the Wigner function is utilized to quantify the quantumness and classicality of the system in phase space. It is observed that the external field has a greater effect on the classicality of the system than the detuning parameters. Furthermore, the dynamics of the Pancharatnam phase displays rapid oscillations for large detuning values, whereas the external field diminishes the number of phase jumps.

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“…[32,33] Quantum systems also are exposed to noisy channels, such as amplitude damping channel, depolarizing channel, and phase damping channel, which disrupt quantum correlations, leading to information loss and reduced entanglement. [34,35] Furthermore, the energy loss from the quantum system to dissipative environments and its impact on quantum correlations have been studied. [36][37][38] Recently, the effects of classical and stochastic environments on quantum correlation and entanglement have been examined.…”

Section: Introductionmentioning

confidence: 99%

Noise‐Based Damping of Chaotic Entanglement in Pulsed Driven Two‐Qubit System

Abd‐Rabbou,

Khalil,

Al‐Awfi

2023

Annalen der Physik

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This paper investigates the entanglement dynamics of a two‐qubit system in the presence of n‐sequential sin 2‐pulse shape. The study explores entanglement under two scenarios: when the system is completely isolated from the environment and when it interacts with one of the surrounding environments, namely the thermal environment and the common dephasing environment. The authors quantify entanglement through concurrence while systematically examining the effects of initial state preparation, qubit coupling strength, laser‐qubit interaction intensity, pulse sequences, and decohering environments. The results highlight that the entanglement of the two‐qubit system strongly depends on the initial state. Increasing the coupling strength between the qubits and the n‐sequential pulse enhances the maximum values of entanglement. Conversely, augmenting the laser‐qubits coupling or introducing the influence of the environment diminishes the entanglement.

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Detraction of decoherence that arises from the acceleration process

Cited by 8 publications

References 46 publications

The influence of Ohmic noise on the dynamics of three-spin open quantum system

The influence of Ohmic noise on the dynamics of three-spin open quantum system

Depiction of an External Classical Field Effects on a Four-Level W-Configuration Atom Embedded in a Coherent Cavity Field

Noise‐Based Damping of Chaotic Entanglement in Pulsed Driven Two‐Qubit System

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