Effects of electric field and light polarization on the electromagnetically induced transparency in an impurity doped quantum ring

Bejan, D.; Stan, Cristina; Niculescu, E.C.

doi:10.1016/j.optmat.2017.11.047

Cited by 22 publications

(9 citation statements)

References 47 publications

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“…where If, however, γ 31 = γ 21 as they were taken in many theoretical papers [30][31][32][33][34][35][36][37][38][39][40], we obtain Γ = γ 21 , Ω ref = 0. Therefore ∆ ± p = iγ 21 ± Ω c and equation ( 17) can be written as:…”

Section: Transparency Induced Through Autler-townes Splittingmentioning

confidence: 99%

“…The relevant master equations are given in Appendix A. The susceptibility of the three-level system, related to the probe field, is given through the matrix element ρ 21 = ρ * 12 for the Ξ-system and ρ 31 = ρ * 13 for Λ and V systems, and can be written in a compact form as [40]:…”

Section: Theorymentioning

confidence: 99%

“…Because we are interested to treat in an unitary way all possible configurations of three levels that allow transparency in our quantum ring and also the switch between them at given magnetic field values, we specifically work in the ATS regime to ensure the transparency for the V configurations. We consider that the transparency is good and the ATS phenomenon has occurred if the following condition is respected [30,33,40]:…”

Section: Transparency Induced Through Autler-townes Splittingmentioning

confidence: 99%

“…In semiconductor nanostructures, EIT has been experimentally demonstrated in quantum wells [22][23][24][25][26][27] and InGaAs quantum dots [28,29]. Many theoretical papers investigated EIT occurrence in quantum wells [30,31], dots [32][33][34][35][36][37][38] and rings [39][40][41]. However, these theoretical studies treated on the influence of the external fields, temperature and pressure on the transparency window making no difference between EIT and ATS regimes, even though they worked with a rather strong coupling field.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic field controlled induced transparency by Autler–Townes splitting in pseudo-elliptic quantum ring

2019

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We theoretically investigated the effects of magnetic field and of the parameters of control and probe lasers on the transparency induced through Autler-Townes splitting (ATS) in GaAs/GaAlAs pseudo-elliptic quantum ring. We showed that if equal decay rates are considered the investigation of the electromagnetically induced transparency phenomenon can be done only in the strong coupling regime. Our study reveals that the quantum system is in a Λ configuration in the absence of external fields but, in the presence of the magnetic field, it may present simultaneously many configurations (of Λ, Ξ and V type) that allow the occurrence of transparency, separated by very narrow regions of magnetic fields where no configuration is active. The magnetic field determines almost periodically the switch between configurations. We demonstrated that in V (Ξ) configurations the ATS requires the greatest (lowest) intensity of the control laser and of the energy of the probe laser.

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Section: Transparency Induced Through Autler-townes Splittingmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Section: Transparency Induced Through Autler-townes Splittingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Magnetic field controlled induced transparency by Autler–Townes splitting in pseudo-elliptic quantum ring

2019

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“…The resultant effective confinement potential manifestly alters a number of physical properties of LDSS with respect to a dopant-free condition and the said alteration possesses enormous technological relevance. Naturally, studies on LDSS Physics, taking into account the dopant contributions, has now become ubiquitous with some special emphasis on the optical properties of LDSS under external electric and magnetic fields [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Magnetic susceptibility of doped quantum dots: interplay between binding energy and noise

2020

Biointerface Res Appl Chem

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Current work focuses on realizing how the interaction between binding energy(BE) and noise influences the magnetic susceptibility(χ) of doped GaAs quantum dot (QD). The system is exposed to Gaussian white noise and the dopant is also characterized by a Gaussian function. The work also highlights the role of the pathway via which noise may operate in the system. We have found that it is the multiplicative noise that alters the χ profile significantly from that of a noise-free atmosphere. However, additive noise does not change the χ profile from that under noise-free state to any meaningful size. Often multiplicative noise induces paramagnetism in the system which otherwise shows diamagnetism. And the noise-BE interplay prominently determines the extent of diamagnetism displayed by the system.

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The effect of hydrostatic pressure and temperature on impurity states in a cylindrical quantum dot

Jia

Wang

et al. 2021

J Comput Electron

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Effects of electric field and light polarization on the electromagnetically induced transparency in an impurity doped quantum ring

Cited by 22 publications

References 47 publications

Magnetic field controlled induced transparency by Autler–Townes splitting in pseudo-elliptic quantum ring

Magnetic field controlled induced transparency by Autler–Townes splitting in pseudo-elliptic quantum ring

Magnetic susceptibility of doped quantum dots: interplay between binding energy and noise

The effect of hydrostatic pressure and temperature on impurity states in a cylindrical quantum dot

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