Monopole Embedded Eigenstate in Nonlocal epsilon-Near Zero Nanostructures

Abstract

In recent years, the confinement of light in open systems with no radiation leakage has raised great interest in the scientific community, both due to its peculiar and intriguing physics and due to its important technological applications. In particular, materials with near-zero permittivity offer a unique opportunity for light localization, as they enable the formation of embedded eigenstates in core-shell systems with suppressed radiation loss. For all the solutions presented thus far in the literature, the exact suppression of the radiation leakage can occur only when the size of the resonator is delicately tuned. Surprisingly, here it is shown that the tuning of the resonator radius may be unnecessary, and that nonlocal metal spherical nanostructures of any size may support multiple embedded eigenstates with a monopole-type symmetry.

References in corpus (6)

• Nonlocal optical response in metallic nanostructures
• Nonlocal Response of Metallic Nanospheres Probed by Light, Electrons, and Atoms
• Size-dependent nonlocal effects in plasmonic semiconductor particles
• Robust bound states in the continuum in Kerr microcavity embedded in photonic crystal waveguide
• Capturing Broadband Light in a Compact Bound State in the Continuum
• Multiple Embedded Eigenstates in Nonlocal Plasmonic Nanostructures

Cited by in corpus (2)

• Roadmap on Nonlocality in Photonic Materials and Metamaterials
• The Uniqueness Theorem for Nonlocal Hydrodynamic Media