Enhancement of the Goos-Hänchen shift via chiral quantum-dot molecule systems

Muhammad, Idrees; Ullah, Muhib; Wang, Li‐Gang

doi:10.1103/physreva.108.013701

Cited by 12 publications

(4 citation statements)

References 39 publications

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“…In this study, we analyzed a QDs system consisting of two self-assembled QDs ((In,Ga)As/GaAs), characterized by distinct band structures and lateral coupling, as depicted in figure 1 (above the interface (y > 0)) [38][39][40]. A cohesive assembly of QDs is synthesized by combining atomic layer deposition and molecular beam techniques, yielding two CQDs with a density of 5 × 10 7 cm −2 [39].…”

Section: Qds Mediummentioning

confidence: 99%

“…A biexciton is generated in the right QD, transitioning to the state |4⟩ via the application of a strong control field with Rabi frequency Ω c and a weak probe field with Rabi frequency Ω p . The dynamic interaction of the system is described utilizing dipole and rotating-wave approximations in the Hamiltonian given as [39,40]…”

Section: Qds Mediummentioning

confidence: 99%

“…The inter-dot tunneling strength is denoted by T e , and the Hermitian conjugate is represented by H.C. The Equations of motion for the CQDs system can be derived using standard techniques by applying the density matrix master equation given as [40,41]…”

Section: Qds Mediummentioning

confidence: 99%

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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: Qds Mediummentioning

confidence: 99%

Section: Qds Mediummentioning

confidence: 99%

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

Idrees,

2024

New J. Phys.

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“…The latter are crucial for measuring parameters such as refractive index, displacement, temperature, beam angle, and film thickness [26]. Various structures have been employed to investigate the GH shift, including negative refractive media [27], lossless dielectric slabs [28], photonic crystals [29], systems with different-level configurations [30][31][32][33][34][35][36][37][38][39][40][41][42], and others [43][44][45][46][47][48]. These investigations contribute to a comprehensive understanding of the GH shift phenomenon and its potential applications in a myriad of scientific and technological contexts.…”

Section: Introductionmentioning

confidence: 99%

Goos–Hänchen shifts in a V-type three-level atomic system interacting with squeezed vacuum

Zeng,

2024

Laser Phys.

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This study explores the Goos–Hänchen (GH) shift phenomenon within a cavity hosting a V-type three-level atomic system, engaged with two independent broadband squeezed baths. Our exploration encompasses a thorough analysis of the lateral shifts in both reflected and transmitted light beams, with a focus on the impact of critical factors, i.e, coupling field strength, incoherent pumping field strength, and squeezed vacuum intensity. Our results reveal an interplay of these parameters, resulting in distinctive negative and positive GH shifts in both reflected and transmitted light. In addition, a remarkable enhancement of GH shifts at specific angles of incidence is observed, presenting a wide-ranging modulation across diverse system parameters. This study not only enriches the understanding of the GH shift in complex atomic systems but also highlights the potential for the manipulation of these lateral shifts by fine-tuning key variables of the system, and contributes valuable insights to the broader field of optical phenomena in quantum systems.

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Effects of dual cross Kerr non-linearity on the manipulation of rotary photon drag

Ali,

Idrees,

Bacha

et al. 2023

Opt Quant Electron

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Enhancement of the Goos-Hänchen shift via chiral quantum-dot molecule systems

Cited by 12 publications

References 39 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

Goos–Hänchen shifts in a V-type three-level atomic system interacting with squeezed vacuum

Effects of dual cross Kerr non-linearity on the manipulation of rotary photon drag

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