Coherent control of the group velocity in a dielectric slab doped with duplicated two-level atoms

Ziauddin, .; Chuang, You-Lin; Lee, Ray-Kuang; Qamar, Sajid

doi:10.1088/1054-660x/26/1/015205

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…Our theoretical model is based on previous work of Ziauddin et al [35]. In this research, we considered a crystalline slab of silica and this slab is placed in Cesium four-level atomic medium.…”

Section: Theoretical Model For Slab Systemmentioning

confidence: 99%

Two-dimensional atom localization and formation of waveguide channels using Bragg diffraction law

Usman¹,

Akbar²,

Khan³

et al. 2022

Phys. Scr.

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Atoms of four-level atomic medium are doped in a crystal slab of silica which is immersed in a four-level atomic medium. We incorporated Bragg law in the Rabi frequencies of driving fields and obtained absorption spectrum which exhibits atom localization inside the crystal plane and generation of waveguide channels. Varying the Bragg angle θ leads to several localized peaks and craters. The number of peaks decreases as we increase the Bragg angle "θ" from " π⁄8" to "π∕2" and the peaks disappear beyond this angle. The localization probability is independent of the Bragg angle, while the spatial resolution varies with change in Bragg angle. However, the probe detuning and amplitudes of Rabi frequencies change the localization probability. Inside the optical lattice of the silica crystal, waveguide channels and particle traps are generated which may be utilized to guide electromagnetic radiations and trap quantum particles. This work is useful for coherent control information of crystal planes, optical trapping, waveguide channels of nano-crystals and data storage.

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Section: Theoretical Model For Slab Systemmentioning

confidence: 99%

Two-dimensional atom localization and formation of waveguide channels using Bragg diffraction law

Usman¹,

Akbar²,

Khan³

et al. 2022

Phys. Scr.

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“…In the past 10 years, a lot of research has been done on controlling incident light passing through defect structures such as a dielectric slab [25][26][27][28][29] and one-dimensional photonic crystals (1DPCs) [17,[30][31][32][33]. As an example, Asadpour and Soleimani [34] looked into the reflection and dispersion spectra of a dielectric medium consisting of quantum dot nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Azimuthal modulation of light propagation through 1DPCs via efficient nonlinear frequency mixing

Batoo,

Al-Dolaimy,

Al-Shukarji

et al. 2024

Laser Phys.

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The present study aims to investigate the transmitted and reflected light beams from a one-dimensional defect photonic crystal (1DPC) composed of a three-level ladder-type quantum system. The lower leg of the ladder scheme is driven by a weaker probe beam, while the upper leg is driven by a stronger control beam. Unlike natural atoms, this type of model with broken symmetry permits the generation of a sum-frequency signal beam between the majority of higher and lower quantum states, resulting in the formation of a cyclic closed-loop arrangement for the interaction between light and matter. The Laguerre Gaussian (LG) field with strong coupling and a weak probe light interact with the quantum system. A new weak signal light is produced as a result of the system’s symmetric breakdown, and the medium becomes azimuthal dependent. We investigate the spatial dependence of the transmitted and reflected light from a defect 1DPC by using azimuthal modulation of the LG light. Additionally, we will discuss how the absorption spectrum’s spatial modulation varies with winding numbers. We discover that in certain regions, the gain can be realized without population inversion under certain specified parametric parameters.

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“…Wang et al [43] investigated subluminal and superluminal light propagation in a reflected and transmitted light beam by doping two-or threelevel atoms within a slab. Recently, coherent control over the group velocity of a light pulse in a dielectric slab doped with duplicated two-level atoms has also been proposed [44].…”

Section: Introductionmentioning

confidence: 99%

Phase-dependent Kerr nonlinearity of a dielectric slab doped by Λ-type atoms

Younessi¹,

Sahrai

Aghbulaghi

et al. 2017

Laser Phys.

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We investigate the linear and nonlinear dispersion and absorption properties of a weak probe field in a dielectric slab doped with Λ-type atoms. The effect of a relative phase between applied fields on linear and nonlinear dispersion, absorption and Kerr nonlinearity is discussed. It is demonstrated that the system is phase sensitive when spontaneously generated coherence and an incoherent pump exist simultaneously. The effect of the coupling field intensity on the Kerr nonlinearity is also presented.

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Coherent control of the group velocity in a dielectric slab doped with duplicated two-level atoms

Cited by 6 publications

References 37 publications

Two-dimensional atom localization and formation of waveguide channels using Bragg diffraction law

Two-dimensional atom localization and formation of waveguide channels using Bragg diffraction law

Azimuthal modulation of light propagation through 1DPCs via efficient nonlinear frequency mixing

Phase-dependent Kerr nonlinearity of a dielectric slab doped by Λ-type atoms

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