Quantum effects in two-qubit systems interacting with two-mode fields: Dissipation and dipole-dipole interplay effects

Mohamed, A.-B.A.; Eleuch, Hichem; Obada, A.‐S. F.

doi:10.1016/j.rinp.2020.103019

Cited by 5 publications

(2 citation statements)

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“…Fig. (6) displays the function E y (t) with the large values of q and the initial qubit pure state ( = π). The squeezing periods only appear after the onset of interaction, then they disappear with the the increase of the time.…”

Section: Entropy Squeezingmentioning

confidence: 99%

“…The positive phase-space distribution or Q-Husimi function was introduced by Husimi [2], which was used for characterizing an arbitrary system of bosons and fermions [3,4]. Generally, the Q-Husimi function has widely successful and blossomed applications in quantum optics [5,31,6] for studying: super fluorescence dynamics [7,8], phase properties of finite states [9], and thermalization processes [10].…”

Section: Introductionmentioning

confidence: 99%

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Nonclassical atomic system dynamics time-dependently interacts with finite entangled pair coherent parametric converter cavity fields

2021

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We consider a time-dependent model that describes a qubit timedependently interacts with a cavity containing finite entangled pair coherent parametric converter fields. The dynamics of some quantum phenomena, as: phase space information, quantum entanglement and squeezing, are explored by atomic Husimi function, atomic Wehrl entropy, variance, and entropy squeezing. The influences of the unitary qubit-cavity interaction, the difference between the two-mode photon numbers, the initial atomic coherence, and the time-dependent qubit location are investigated. It is found that the regularity, the amplitudes and the frequency of the quantum phenomena can be controlled by the physical parameters. For the initial atomic pure state, the qubit-cavity entanglement, the qubit phase space information, and atomic squeezing can be generated strongly compared to those of the initial atomic mixed state. The time-dependent location parameters enhance the generated quantum phenomena, and its effect can be enhanced by the parameters of the two-mode photon numbers and the initial atomic coherence.

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Section: Entropy Squeezingmentioning

confidence: 99%