Optical absorption in concentric double quantum rings

Salehani, Hojjatollah K.

doi:10.1007/s11082-023-04939-x

Opt Quant Electron

2023

DOI: 10.1007/s11082-023-04939-x

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Optical absorption in concentric double quantum rings

Hojjatollah K. Salehani

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Cited by 2 publications

References 48 publications

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Double Quantum Ring under an Intense Nonresonant Laser Field: Zeeman and Spin-Orbit Interaction Effects

Mora-Ramos,

Vinasco,

Radu

et al. 2023

Condensed Matter

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We theoretically investigate the properties of an electron energy spectrum in a double GaAs-Al0.3Ga0.7As quantum ring by using the effective mass and adiabatic approximations, together with a realistic description of the confining potential profile, which is assumed to be deformed due to the application of an intense nonresonant laser field. The effects of the applied magnetic field and spin-orbit interaction are included. We discuss the features of the lowest confined energy levels under a variation of magnetic field strengths and intense laser parameters. The influence of this external probe on the linear optical absorption response associated with interlevel transitions is analyzed by considering both the presence and absence of spin-orbit effects.

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Double Quantum Ring under an Intense Nonresonant Laser Field: Zeeman and Spin-Orbit Interaction Effects

Mora-Ramos,

Vinasco,

Radu

et al. 2023

Condensed Matter

View full text Add to dashboard Cite

show abstract

Spatial Entanglement Between Electrons Confined to Rings

Ciftja,

Batle,

Abdel-Aty

et al. 2024

Symmetry

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We study systems of two and three electrons confined to circular rings. The electrons are considered spinless, and we assume that one electron occupies a single ring. We use the framework of such a model to calculate the linear entropy and, thus, the spatial entanglement between the confined electrons. The geometry of the problem for the case of two electrons incorporates situations in which the planes of the two rings form an arbitrary angle with each other. The resulting Schrödinger’s equation is solved numerically with very high accuracy by means of the exact diagonalization method. We compute the ground state energy and entanglement for all configurations under consideration. We also study the case of three electrons confined to identical, parallel and concentric rings which are located in three different equidistant planes. The vertically separated system of rings is allowed to gradually merge into a single ring geometry, which would represent the equivalent system of a ring with three electrons. It is observed that the system of three electrons gives rise to a richer structure, as the three rings merge into a single one.

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Optical absorption in concentric double quantum rings

Cited by 2 publications

References 48 publications

Double Quantum Ring under an Intense Nonresonant Laser Field: Zeeman and Spin-Orbit Interaction Effects

Double Quantum Ring under an Intense Nonresonant Laser Field: Zeeman and Spin-Orbit Interaction Effects

Spatial Entanglement Between Electrons Confined to Rings

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