Abstract The dielectric tensor of four level atomic medium coupled with dielectric function of silver silica nano-composites material to modify dispersion relation of surface plasmon polaritons (SPPs). The rapid damping of SPPs is used to localized atomic particles in two dimension inverse position space. Directions, phases and intensity of the control field play important roles in the localization of atoms in a unit wavelength domain. Ten, six, four and two localization peaks are investigated by SPPs damping in different quadrants. A single broad localized peak symmetric about origin are also investigated. The theoretical work of this article may be useful for quantum information in Plasmonster technology.
Abstract The dielectric tensor of four level atomic medium coupled with dielectric function of silver silica nano-composites material to modify dispersion relation of surface plasmon polaritons (SPPs). The rapid damping of SPPs is used to localized atomic particles in two dimension inverse position space. Directions, phases and intensity of the control field play important roles in the localization of atoms in a unit wavelength domain. Ten, six, four and two localization peaks are investigated by SPPs damping in different quadrants. A single broad localized peak symmetric about origin are also investigated. The theoretical work of this article may be useful for quantum information in Plasmonster technology.
Abstract This manuscript theoretically investigates atomic microscopy at the interface of a silver-silica (AgSiO 2 ) Nano-composite and cesium atomic medium, incorporating surface plasmon polariton dispersion relations and the effect of Orbital Angular Momentum (OAM). The localization mechanism is determined by the absorption spectrum of surface plasmon polaritons (SPPs), which is influenced by the imaginary part of the propagation constant [Im (ksp)]. Here's the simplified version. The position of atoms may be controlled by altering (OAM) and field parameters, including probe detuning (δ p ), control field detuning (δ 1,2 ), decay rates (γ 1,2,3,4 ), Nano-composite volume percentage (f v ), Rabi frequencies (Ω 1,2 ) and position independent part of Rabi frequencies (G 1,2 ). The suggested scheme gains sub-wavelength spatial resolution in atom localization, with potential applications in atom nanolithography and in the process of neutral atom trapping and laser cooling and more. These findings demonstrate how important quantum-plasmonic interactions are to sophisticated atomic manipulation methods.
Abstract Two-dimensional atomic microscopy is governed by the dispersion relation of surface plasmon polariton (SPP) waves at the interface between sodium metal and multi-walled carbon nanotubes (MWCNTs). The absorption or damping spectrum of these SPP waves encodes critical information about atomic localization. In accordance with Heisenberg microscopy, atoms can be localized with a resolution of along any spatial axis ( x, y , or z ). In this study, we tune the dispersion relation of SPPs by adjusting control fields and the parameters of MWCNTs. By adjusting these parameters, we achieve control over the number and positioning of single, double, and multiple localized peaks within a single wavelength domain in the damping spectrum of SPPs on a two-dimensional plane. Notably, we demonstrate atomic localization at scales significantly smaller than , with peak widths reduced to below along both x - and y -axes. Furthermore, we manipulate the shape and arrangement of localization peaks, achieving loop-like, wall-like, crater-like, and Gaussian profiles. These advancements have potential applications in high-precision atomic position measurement, nano-lithography, and Bose-Einstein condensation.
Abstract The phase and velocity sensitivity is calculated at the interface of three level atomic medium and a Silver Silica (AgSiO 2 ) nano-composites material by surface plasmon polaritons waves. A large kink in the real part of dispersion relation of SPPs is measured in the large interaction zone, due to which the group velocity and delay/advance times of SPPs are enhanced. A group velocity of v g = ±1 × 10 9 m s −1 is measured at the group index region of 0 < n g < 1 and −1 < n g < 0. The propagation time is measured to be t g = ±1 × 10 −7 s at the propagation length L x ( m ) and at v g = ±1 × 10 9 m s −1 in the range of group index of 0 < n g < 1 and −1 < n g < 0. The volume fractional change of nano particles, probe/control field detuning and Rabi frequency of control field significantly influence the velocity sensitivity. The velocity sensitivity is measured to be 23 μ m s −1 by SPPs. The velocity sensitivity could be improved to 0.1 μ m s −1 by taking large ensemble of atomic coherence and large delay/advance in time due to SPPs.
The damping spectrum of surface plasmon polaritons (SPPs) is significantly enhanced for atom localization in regions beneath λ/20×λ/20. By changing the phases and directions of control fields, two and single localization peaks are observed in the SPP damping spectrum. Circular and elliptical localization peaks are predominantly controlled in the λ2 areal region of −π≤kx≤π and −π≤ky≤π. Additionally, craters and sharp peaks resembling localization can be modified and controlled within the two-dimensional space of λ2 with a resolution smaller than λ2/400. These modifications may be advantageous to the trapping of neutral atoms, nanolithography, and plasmonics technology.
Abstract The velocity uncertainty by Fizeaus plasmon dragging‐effect is investigated at the interface of four level atomic medium and Silver Silica (AgSiO2) nano‐composites material by using surface plasmon polaritons(SPPs) waves. We measured the real part of the dispersion relation Re(Ksp) = 1.5K0 with probe and control field detunings and Re(Ksp) = 1.36K0 with control field Rabi frequencies ∣Ω1,2 ∣ /γ. Furthermore, Re(Ksp/K0) = 1.8 with damping rate γ42/γ and volume frictional change fm. A large kink in the real part of dispersion relation of SPPs was measured in the large interaction region. The group index is in the range of ±20. The maximum dragging coefficient is ±20. The relative phase difference due to dragging is enhance by factor of −1.5 × 10−8rad. The propagation time is measured to be 0.8 ns with both control field Rabi frequencies. The volume fractional change of nano particles, probe/control field detuning and Rabi frequency of control field significantly influence the dragging coefficient, relative phase difference and velocity uncertainty. Including Fizeau‐Dragging effect in the given configuration the velocity uncertainty is measured to be 15 μm/s which is much larger than the velocity width of Kuan et al, used Δva = (8kBTln2/m)1/2 = 176 mm/s. The velocity uncertainty could be improved to 0.1 μm/s by taking large ensemble of atomic coherence and large delay/advance in time due to SPPs.
This article investigates the coherent control of spatio-temporal bright and dark soliton pulses along with the associated intensity of surface plasmon polariton (SPP) waves at the interface of silver-silica nano-composite materials and a gain-assisted medium. A considerable control over SPPs soliton pulses is revealed by varying the position, time, and characteristics of the applied driving fields. The strength of solitonic pulses can vary based on system factors, potentially increasing, decreasing, or remaining constant over time. Periodic dark and bright solitons are also observed, with intensity patterns exhibiting exponential decay over time. When dispersion and nonlinearity are compared, stable solitons may maintain a constant intensity level of 60%. Moreover, the strength of surface plasmon polaritons (SPPs) can be adjusted between 0 and 100%. This adjustment is achieved by modifying external fields, allowing for either complete enhancement or total suppression of the SPPs. These findings provide a solid foundation for the development of active, compact, and fast photonic devices. They bridge the gap between light-matter interactions at the quantum level and the advancement of integrated nano-photonic devices. Such devices encompass applications in nano-scale sensing, logic gates, electrochemical sensing, optical switching, and biomedical imaging.