Polarization effect on dressed plasmonic waveguides

Herath, Kosala; Premaratne, Malin

doi:10.1117/12.2635710

Cited by 5 publications

(4 citation statements)

References 52 publications

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“…Here,  is the area of the system. In the realm of linear polarized dressing fields, it can be identified that The introduction of the novel vector potential yields alterations in the wave function solutions, consequently allowing for the derivation of a distinct collection of Floquet states with [46] k…”

Section: Floquet States In Dressed 2d Semiconductor Quantum Wellmentioning

confidence: 99%

“…The concept of Floquet engineering has emerged from these advancements, which involves customizing the Floquet electronic band structure through a periodic drive to alter material properties [42]. This encompasses the discovery of novel non-equilibrium topological states of matter [43], the engineering of correlated quantum phases [44], and the manipulation of quantum many-body systems [42,45,46]. In the realm of Floquet physics, one can predict the behavior of driven systems without relying on perturbation methods by treating the quantum system and the electromagnetic field as a single composite quantum system, known as the dressed system.…”

Section: Introductionmentioning

confidence: 99%

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Floquet engineering-based frequency demodulation method for wireless THz short-range communications

Herath,

Nirmalathas,

Gunapala

et al. 2023

Phys. Scr.

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This study introduces a novel theoretical framework for detecting and decoding wireless communication signals in the nanoscale range operating at terahertz (THz) frequencies. Initially, we investigate the Floquet states in a dressed 2D semiconductor quantum well and derive an analytical expression to determine its longitudinal conductivity. The results indicate that the longitudinal conductivity of a dressed 2D semiconductor can be tailored to specific requirements by manipulating the frequency of the external dressing field. Furthermore, carefully selecting the intensity and polarization type of the external dressing field enables fine-tuning and optimization of the conductivity. To evaluate the effectiveness of each dressing field configuration, we present a Figure of Merit (FoM) assessment that determines the maximum possible change in conductivity within the considered frequency range. The proposed theory introduces a mechanism capable of identifying frequency-modulated communication signals in the THz range and performing frequency demodulation. We comprehensively analyze of the demodulator's transfer function in the receiver. Consequently, we establish that the transfer function exhibits linear behavior over a specific frequency range, rendering it suitable for frequency demodulation. Finally, we provide a numerical illustration of a frequency demodulation scenario. The breakthrough uncovered in this study opens up possibilities for the development of high-efficiency, lightweight, and cutting-edge chip-scale wireless communication devices, circuits, and components.

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Section: Floquet States In Dressed 2d Semiconductor Quantum Wellmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Floquet engineering-based frequency demodulation method for wireless THz short-range communications

Herath,

Nirmalathas,

Gunapala

et al. 2023

Phys. Scr.

Self Cite

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“…The time-periodic electromagnetic radiation applied in this context called the dressing field. Nevertheless, previous research [54,61] on Floquet engineering of SPP propagation restricted their investigation into a specific polarization mode, neglecting a broader theoretical discourse encompassing the influence of polarization on the dressed SPP modes and the potential for further enhancements in Floquet engineered SPPbased waveguides.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we address the limitations identified in prior research [54,58,61,62] by presenting a comprehensive and generalized theoretical framework. We aim to elucidate the influence of the dressing field's polarization type on the behavior of dressed SPP modes within plasmonic waveguides.…”

Section: Introductionmentioning

confidence: 99%

Investigating the impact of polarization on surface plasmon polariton characteristics in plasmonic waveguides under periodic driving fields

Herath,

Gunapala,

Premaratne

2024

Phys. Scr.

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This study delves into the effects of polarization on surface plasmon polariton (SPP) modes within plasmonic waveguides when subjected to periodic driving fields. Addressing a significant knowledge gap in the existing literature, we present a comprehensive investigation employing Floquet engineering techniques, with a specific emphasis on elliptically polarized fields as the dressing field. Our analysis reveals that the use of generalized Floquet states allows us to derive Floquet states for specific polarized dressing fields, such as linear, left-handed circular, and right-handed circular polarization. Remarkably, we demonstrate that Floquet states depend on the chirality of the dressing field's polarization. Employing the Floquet-Fermi golden rule, we assess electron transport under various polarization types and find that the specific polarization type influence electron transport properties. However, we establish that the chirality of the polarization of the dressing field does not impact the transport properties. During our numerical analysis, we assess the alterations in SPP characteristics arising from two distinct types of polarization in dressing fields: linear polarization and circular polarization. Our results underscore the potential of employing a dressing field to effectively mitigate the propagation losses of SPPs in plasmonic metals, with the extent of improvement contingent on the specific polarization type. To quantify the performance enhancements of commonly used plasmonic metals under linearly and circularly polarized dressing fields, we employ a figure of merit (FoM). This study offers insights into the practical utilization of periodic driving fields as a powerful tool in advancing plasmonic communication within chip-scale environments.

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A Floquet engineering approach to optimize Schottky junction-based surface plasmonic waveguides

Herath

Gunapala

Premaratne

2023

Sci Rep

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The ability to finely control the surface plasmon polariton (SPP) modes of plasmonic waveguides unveils many potential applications in nanophotonics. This work presents a comprehensive theoretical framework for predicting the propagation characteristics of SPP modes at a Schottky junction exposed to a dressing electromagnetic field. Applying the general linear response theory towards a periodically driven many-body quantum system, we obtain an explicit expression for the dielectric function of the dressed metal. Our study demonstrates that the dressing field can be used to alter and fine-tune the electron damping factor. By doing so, the SPP propagation length could be controlled and enhanced by appropriately selecting the intensity, frequency and polarization type of the external dressing field. Consequently, the developed theory reveals an unexplored mechanism for enhancing the SPP propagation length without altering other SPP characteristics. The proposed improvements are compatible with existing SPP-based waveguiding technologies and could lead to breakthroughs in the design and fabrication of state-of-the-art nanoscale integrated circuits and devices in the near future.

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Polarization effect on dressed plasmonic waveguides

Cited by 5 publications

References 52 publications

Floquet engineering-based frequency demodulation method for wireless THz short-range communications

Floquet engineering-based frequency demodulation method for wireless THz short-range communications

Investigating the impact of polarization on surface plasmon polariton characteristics in plasmonic waveguides under periodic driving fields

A Floquet engineering approach to optimize Schottky junction-based surface plasmonic waveguides

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