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International Journal of Quantum Chemistry

Plasmon's Fizeau‐dragging effect at the interface of atomic and nano‐composites media

Gohar Zeb Khan, Imrana Ashraf, Arif Ullah, Bakht Amin Bacha

Published Mar 13, 2021• 6 citations
Publisher

Abstract

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.

DOI
10.1002/qua.26655

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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.
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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.
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In this manuscript, sensitivity of the surface plasmon polariton waves (SPPs) using angular interrogation is coherently manipulated at the interface of four level high magneto-optical medium and silver metal using prism geometry. The control and probe fields detuning, Rabi frequency and decay rate manipulated significantly the angular interrogation of sensitivity of the surface plasmon polariton waves. The permittivity ϵd and permeability μd of the high magneto-optical medium play an important role in the manipulation of the sensitivity. The sensitivity is a function of control field detuning. The maximum sensitivity is reported to 800 deg/RIU with control field detuning. The minimum sensitivity is investigated to 6 deg/RIU with probe field detuning and Rabi frequency of control field. The reported results have useful applications in data storage and chemical sensing technologies.
Superluminal propagation of light is a well-established phenomenon and has motivated immense research interest that has led to state-of-the-art knowledge and potential applications in the emerging technology of quantum optics and photonics. This study presents a theoretical analysis of the gain-assisted superluminal light propagation in a four-level NNN-type atomic system by exploiting the scheme of electromagnetically induced gain and superluminal propagation of surface plasmon polaritons (SPPs) along the gain-assisted atomic-metal interface simultaneously. In addition, a theoretical demonstration is presented on the comparison between Fresnel's rotary photon drag and SPP drag in view of light polarization state rotation by rotating the coherent atomic medium and the atomic-metal interface, respectively. Analogous to photon drag in the superluminal anomalous dispersion region where light polarization rotation occurs opposite the rotation of the gain-assisted atomic medium, the rotation of the atomic-metal interface also rotates the polarization state of SPPs opposite the rotation of the interface. This further confirms the superluminal nature of SPPs propagating along the interface with negative group velocity. Rabi frequencies of the control and pump fields considerably modify both photon and SPP drag coefficients. Metal conductivity also controls SPP propagation.