Quantum Coherence and Total Phase in Semiconductor Microcavities for Multi-Photon Excitation

Altowyan, Abeer S.; Berrada, K.; Abdel‐Khalek, S.; Eleuch, Hichem

doi:10.3390/nano12152671

Cited by 5 publications

(2 citation statements)

References 69 publications

(74 reference statements)

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“…Quantum coherence or quantum superposition lies at the hotspot of quantum theory, and it is a very valuable resource for quantum information processing [ 58 , 59 ]. It is also of equal importance as entanglement in the studies of both bipartite and multipartite quantum systems [ 60 ].…”

Section: Formalismmentioning

confidence: 99%

Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments

Ablimit

Xie

et al. 2022

Entropy

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We investigate the time-dependent behaviour of the energy current between a quantum spin chain and its surrounding non-Markovian and finite temperature baths, together with its relationship to the coherence dynamics of the system. To be specific, both the system and the baths are assumed to be initially in thermal equilibrium at temperature Ts and Tb, respectively. This model plays a fundamental role in study of quantum system evolution towards thermal equilibrium in an open system. The non-Markovian quantum state diffusion (NMQSD) equation approach is used to calculate the dynamics of the spin chain. The effects of non-Markovianity, temperature difference and system-bath interaction strength on the energy current and the corresponding coherence in cold and warm baths are analyzed, respectively. We show that the strong non-Markovianity, weak system-bath interaction and low temperature difference will help to maintain the system coherence and correspond to a weaker energy current. Interestingly, the warm baths destroy the coherence while the cold baths help to build coherence. Furthermore, the effects of the Dzyaloshinskii–Moriya (DM) interaction and the external magnetic field on the energy current and coherence are analyzed. Both energy current and coherence will change due to the increase of the system energy induced by the DM interaction and magnetic field. Significantly, the minimal coherence corresponds to the critical magnetic field which causes the first order phase transition.

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Section: Formalismmentioning

confidence: 99%

Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments

Ablimit

Xie

et al. 2022

Entropy

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show abstract

“…There are several methods that have been proposed for measuring and detecting coherence in quantum systems [15]. Several studies on the characterization and analysis of coherence have been proposed through the coherence measure and have garnered a lot of interest [23][24][25][26][27][28][29][30]. From another side, coherence is susceptible to noise from the environment since any actual system must interact with it.…”

Section: Introductionmentioning

confidence: 99%

Classical and quantum correlations between two qubits interacting with a field in thermal spin states

Algarni¹,

Abdel‐Khalek²,

Berrada³

2023

Laser Phys. Lett.

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In this manuscript, we introduce a quantum physical model consisting of two-atom system that interact with a quantized field initially prepared in the thermal spin states (TSSs). We study the effect of the main parameters of the model on the dynamical behavior atom–atom coherence, atoms-field entanglement, atom–atom entanglement and classical correlation. We show how the quantumness measures can be influenced by the spin number and thermal noise in the absence and presence of time-dependent coupling effect. We obtain that, despite the destructive influence of thermal noise, a considerable amount of coherence, entanglement and classical correlation still remain during the time evolution according the values of spin number. The results also show that the TSSs can offer the advantage of generating the maximal amount of coherence, entanglement and classical correlation during the dynamics.

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Entanglement, quantum coherence and quantum Fisher information of two qubit-field systems in the framework of photon-excited coherent states

Abdel-Khalek,

Algarni,

Marin

et al. 2023

Opt Quant Electron

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Quantum Coherence and Total Phase in Semiconductor Microcavities for Multi-Photon Excitation

Cited by 5 publications

References 69 publications

Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments

Quantum Energy Current Induced Coherence in a Spin Chain under Non-Markovian Environments

Classical and quantum correlations between two qubits interacting with a field in thermal spin states

Entanglement, quantum coherence and quantum Fisher information of two qubit-field systems in the framework of photon-excited coherent states

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