Tuning the Effective PT-Phase of Plasmonic Eigenmodes

Abstract

We experimentally observe an effective PT-phase transition through the exceptional point in a hybrid plasmonic-dielectric waveguide system. Transmission experiments reveal fundamental changes in the underlying Eigenmode interactions as the environmental refractive index is tuned, which can be unambiguously attributed to a crossing through the plasmonic exceptional point. These results extend the design opportunities for tuneable non-Hermitian physics to plasmonic systems.

References in corpus (10)

• Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
• The physics of exceptional points
• Topological energy transfer in an optomechanical system with exceptional points
• Spawning rings of exceptional points out of Dirac cones
• Topological Transition in a Non-Hermitian Quantum Walk
• Repulsion of Resonance States and Exceptional Points
• Dynamically encircling exceptional points: Exact evolution and polarization state conversion
• $\mathcal{P}\mathcal{T}$-symmetric circuit-QED
• Exceptional Points in three-dimensional Nanostructures
• Self-hybridization within non-Hermitian plasmonic systems

Cited by in corpus (10)

• Non-Hermitian Physics
• Topological semimetal phase with exceptional points in one-dimensional non-Hermitian systems
• Tunable strong plasmon-exciton coupling based on borophene and deep subwavelength perovskite grating
• Properties of the non-Hermitian SSH model: role of PT-symmetry
• Non-Hermitian Stark Many-Body Localization
• Topological optomechanical amplifier with synthetic $\mathcal{P}\mathcal{T}$-symmetry
• Bound states in the continuum and exceptional points in dielectric waveguide equipped with a metal grating
• Self-stabilization of light sails by damped internal degrees of freedom
• Influence of non-Hermitian mode topology on refractive index sensing with plasmonic waveguides
• One-sided destructive quantum interference from an exceptional point-enabled metasurface