Quantum Entropy in Ladder-Plus-Y Double Quantum Dot System using Spontaneously Generated Coherence

Al-Ameri, Hakeem H.; Abdullah, M.; Al-Khursan, Amin H.

doi:10.1007/s10773-020-04635-6

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…Recently, the investigation of the SGC has also been extended to semiconductor quantum dots. For example, Ameri et al investigated entanglement characteristics of the quantum entropy in a double quantum dot system via SGC 32 . They also discovered that the entropy of the system is enhanced for significant strength of SGC, pump and tunneling fields.…”

Section: Introductionmentioning

confidence: 99%

Controlling behaviour of transparency and absorption in three-coupled multiple quantum wells via spontaneously generated coherence

Mukherjee,

Hazra,

Borgohain

2024

Sci Rep

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This article presents a coherent phenomenon called spontaneously generated coherence (SGC) under the regime of electromagnetically induced transparency (EIT) in a three-coupled multiple quantum wells. We demonstrate that the presence of SGC in these quantum wells lead to intriguing modifications in the transparency window within the absorption spectrum. At the same time, modification of the dispersive nature is also demonstrated which enables the feasibility of the system in diverse applications based on light propagation. The absorption and dispersion responses are found to be varied by the individual strength of the first and second control fields in presence as well as in absence of SGC in the EIT regime. The positional shifting of the transparency window and simultaneous modifications in the dispersive profiles by tuning the control field detunings of both the first and second control fields are also revealed. Some absorption and dispersion contours are illustrated for getting better insights into the modifications of the optical responses via SGC. Finally, by manipulating the strength of the SGC parameter, we observe the changes in the respective position of the transparency window and dispersion curve. It is expected that the current investigations will pave novel ways for innovative applications in quantum communications, and fabrication of advanced photonic devices.

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Section: Introductionmentioning

confidence: 99%

Controlling behaviour of transparency and absorption in three-coupled multiple quantum wells via spontaneously generated coherence

Mukherjee,

Hazra,

Borgohain

2024

Sci Rep

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show abstract

“…A great deal of attention has been generated by a range of phenomena due to various their applicability in quantum nonlinear optics, such as electromagnetic induced transparency (EIT) [1], optical bistability [2][3][4], subluminal and superluminal light propagation [5], improved Kerr nonlinearity [6], * Author to whom any correspondence should be addressed. spontaneously generated coherence (SGC) [7], high refractive index [8], and many more surprising effects [9][10][11][12][13][14][15][16][17]. Because of this, EIT has been examined in a variety of different architectures, including multilevel atoms and semiconductor quantum well (QW) nanostructures, respectively [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Diffraction grating via position dependent incident light in a closed-loop quantum system

Kadhim¹,

Kubaisy²,

Mohammed³

et al. 2023

Laser Phys.

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We have proposed a new model for controlling the electromagnetically induced grating in a three-level closed-loop quantum system. The quantum system interacts with three-laser fields which one of them is the weak probe light and two of them are strong driving and coupling laser fields. These two strong laser fields have standing wave (SW) patterns in two x and y directions. This makes that the absorption and dispersion properties of the media change periodically which leads to diffraction of the transmitted light. We have shown that because of the closed-loop configuration of the quantum system the relative phase between applied lights can affect the diffraction grating pattern of the transmitted light. We have also discussed the Rabi-frequency effect of the driving and coupling lights on the different orders of the grating. We have shown that our proposed model may be used as a new tool for developing the future quantum information processing devices.

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Spatially Control of Quantum Entropy in a Three-level Medium

khudhair

Fathdal²,

Raheem³

et al. 2022

Int J Theor Phys

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Quantum Entropy in Ladder-Plus-Y Double Quantum Dot System using Spontaneously Generated Coherence

Cited by 7 publications

References 34 publications

Controlling behaviour of transparency and absorption in three-coupled multiple quantum wells via spontaneously generated coherence

Controlling behaviour of transparency and absorption in three-coupled multiple quantum wells via spontaneously generated coherence

Diffraction grating via position dependent incident light in a closed-loop quantum system

Spatially Control of Quantum Entropy in a Three-level Medium

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