Quantum coherence-assisted optical properties and drag of SPPs on quantum dots and resonantly-coupled dots-metal plasmonic interfaces via interbands tunneling and Fano resonance

Zahir, Asif; Iqbal, Azmat; Hayat, Sardar Sikandar

doi:10.1016/j.optmat.2022.112227

Cited by 11 publications

(3 citation statements)

References 55 publications

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“…Notably, the system's optical bistability is effectively modulated through the manipulation of laser frequency and gate voltage. Moreover, detailed investigations of QD systems and hybrid QD systems were conducted in the studies referenced in [31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Superluminal propagation of surface plasmon polaritons via hybrid chiral quantum dots system

Idrees,

2024

New J. Phys.

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We present a novel methodology for enhancing superluminal surface plasmon polaritons (SPPs) propagations within a hybrid nanostructure configuration consisting of gold (Au) metal and chiral quantum dots (CQDs) medium. The arrangement of CQDs and metal hybrid nanostructures enables the production of surface plasmon polaritons (SPPs) when exposed to incident light. Theresonances of SPPs within a hybrid nanostructure are determined through analytical calculations using Maxwell's equations underspecified boundary conditions, while the dynamics of the CQDs system are calculated using the density matrix approach. It isdemonstrated that the propagation of SPPs is significantly influenced by both right-circularly polarized (RCP) andleft-circularly polarized surface plasmon polaritons. Additionally, we investigate the enhancement of superluminal SPPspropagation by varying the electron tunneling strength and the intensity of the control field within the hybrid system. Thecharacteristics of RCP and LCP surface plasmon polaritons have been investigated, indicating a large negative group index andadvancement in time. The observation of a large negative group index and advancement in time provides strong evidence forenhanced superluminal SPPs propagation within the proposed hybrid nanostructure. The results have potential applications in thefields of optical information processing, temporal cloaking, quantum communication, and the advancement of computer chip speed.

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Section: Introductionmentioning

confidence: 99%

Superluminal propagation of surface plasmon polaritons via hybrid chiral quantum dots system

Idrees,

2024

New J. Phys.

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“…Recently, light dragging in view of plasmons has been reported in bulk graphene [25,26]. More recently, light drag in view of photon and surface plasmons has been investigated in quantum dots (QDs), QD molecules (QDMs), dots-metal, and dots-nanoparticle plasmonic interfaces [27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Dispersion-dependent superluminal propagation and photon drag in GaAs/AlGaAs quantum dot molecule

Bashir,

Batool,

Arif

et al. 2023

Phys. Scr.

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Controlling the basic properties of light such as polarization, angular momentum, and speed through various optical media leads to interesting phenomena in various fields such as quantum optics, photonics, plasmonics, and quantum information technology. Few of the phenomenon include, for instance, light storage, ultra-slow and ultra-fast propagation, optical transparency, and quantum entanglement via quantum coherence or superposition. The understanding of these phenomenon of milestone implications paved the way for the invention of novel classical and quantum technology. In this article, we present detailed theoretical and numerical demonstration on the dispersion-dependent phenomenon of slow and fast light, optically induced transparency, and photon drag. For this, we employ a three-level scheme of an ensemble of GaAs\AlGaAs double quantum dot molecule in cascade configuration. In particular, by tuning the medium dispersion we predict interesting interplay between ultra-slow and ultra-fast light propagation with vanishing, infinite, ultra-positive and ultra-negative group velocities, and optical-assisted quantum transparency. The quantum coherence of the dressed states modifies considerably the optical properties of the system in view of dispersion, absorption, electron energy loss, transmission, and photon drag. An interesting interplay between ultra-slow to ultra-fast propagation is found by tuning various optical parameters. The calculated superluminal value of group velocity is ±6×10^11 m/s. We also predict light propagation at vanishing and infinite group velocity. The calculated light drag is ±6×10^(-6) rad/m.

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“…Surface plasmon polaritons (SPPs) are a special electromagnetic wave excited at the interface between metal and medium [15][16][17][18]. SPP waves have excellent localization and can limit light to the range of sub-wavelength [19][20][21][22][23], which can be used to design small-sized and even sub-wavelength devices [24][25][26][27]. The combination of traditional waveguides with SPPs can be used to design waveguides with a long transmission distance and a small effective mode area.…”

Section: Introductionmentioning

confidence: 99%

Dual Coupled Long-Range Hybrid Surface Plasmon Polariton Waveguide for Sub-Wavelength Confinement

Wang,

Zhao

et al. 2023

Micromachines

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In this paper, a long-range hybrid waveguide for subwavelength confinement based on double SPP coupling is proposed. The hybrid waveguide consists of a metal-based cylindrical hybrid waveguide and a silver nanowire. There are two coupling regions in the waveguide structure that enhance mode coupling. Strong mode coupling enables the waveguide to exhibit both a small effective mode area (0.01) and an extremely long transmission length (700 μm). The figure of merit (FOM) of the waveguide can be as high as 4000. In addition, the cross-sectional area of the waveguide is only 500 nm × 500 nm, allowing optical operation in the subwavelength range, which helps enhance the miniaturization of optoelectronic devices. The excellent characteristics of the hybrid waveguide make it have potential applications in photoelectric integrated systems.

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Quantum coherence-assisted optical properties and drag of SPPs on quantum dots and resonantly-coupled dots-metal plasmonic interfaces via interbands tunneling and Fano resonance

Cited by 11 publications

References 55 publications

Superluminal propagation of surface plasmon polaritons via hybrid chiral quantum dots system

Superluminal propagation of surface plasmon polaritons via hybrid chiral quantum dots system

Dispersion-dependent superluminal propagation and photon drag in GaAs/AlGaAs quantum dot molecule

Dual Coupled Long-Range Hybrid Surface Plasmon Polariton Waveguide for Sub-Wavelength Confinement

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