Ultrahigh resolution two-dimensional atomic localization via tunable surface plasmon polaritons. (August 2021)

• Record Type: Journal Article
• Authors: Idrees, Muhammad; Ullah, Muhib; Bacha, Bakth Amin; Ullah, Arif; Wang, Li-Gang
• Is Part Of: Optics & laser technology. Volume 140(2021)
• Publication Date: 2021-08
• Subjects: 2D atomic localization -- Surface plasmon polaritons -- Hybrid nanosystem -- λ-type medium; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2021.107021
• Languages: English
• ISSNs: 0030-3992

Abstract

Highlights: Two-dimensional atomic localization is studied via SPPs in hybrid nanosystem. Ultrahigh-resolution and precision atomic localization is obtained in the 2D space. A single position of atom is achieved in a region smaller than λ / 30 × λ / 30 . These results have potential applications in the fields of nanotechnology etc. Abstract: We theoretically investigate the two-dimensional (2D) atomic localization via tunable surface plasmon polaritons (SPPs) in hybrid nanosystem that comprises an ensemble of metallic nanoparticles (MNPs) coupled to a coherent three-level λ -type atomic medium embedded as a dielectric host. Since the MNPs are shined with laser fields, the SPPs are generated at the interface between the MNPs and dielectric medium. The resonances of SPPs in the MNPs are calculated analytically by means of Maxwell's equations under specific boundary conditions, whereas the dynamics of the atomic system are derived using the density matrix method. Owing to space-dependent light-matter interaction, the sharp localized peaks are observed in a single wavelength domain of 2D space with optimal probability. By optimizing the system parameters, ultrahigh-resolution and precision atomic localization can be achieved in a region smaller than λ / 30 × λ / 30 . The spatial resolution of atomic localization is efficiently improved compared to the previously studied cases. These results may have potential useful applications in the fields of quantum nanoplasmonics, nanomedicine, nanophotonics and nanotechnology.