Giant amplification of modes in parity-time symmetric waveguides

Abstract

The combination of the interference with the amplification of modes in a waveguide with gain and losses can result in a giant amplification of the propagating beam, which propagates without distortion of its average amplitude. An increase of the gain-loss gradient by only a few times results in a magnification of the beam by a several orders of magnitude.

arXiv comment4 pages, 1 figure, 1 table; accepted for Physics Letters A

References in corpus (6)

• Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
• Physical realization of $\mathcal{P}\mathcal{T}$-symmetric potential scattering in a planar slab waveguide
• Solitons in a medium with linear dissipation and localized gain
• Interactions of Hermitian and non-Hermitian Hamiltonians
• Construction of exact solutions by spatial traslations in inhomogeneous Nonlinear Schrodinger equations. Applications to Bose-Einstein condensation
• Propagation of Electromagnetic Waves in Linear Media and Pseudo-Hermiticity

Cited by in corpus (11)

• PT-symmetry with a system of three-level atoms
• PT Symmetry via Electromagnetically Induced Transparency
• Using PT-symmetry for switching applications
• Parametric instability of non-Hermitian systems near the exceptional point
• Experimental Observation of Partial Parity-Time Symmetry and Its Phase Transition with a Laser-Driven Cesium Atomic Gas
• Optical fluxes in coupled $\mathcal{P}\mathcal{T}$-symmetric photonic structures
• Control of Power in Parity-Time -Symmetric Lattices
• Broadband quasi-PT Symmetry Sustained by Inhomogeneous Broadening of the Spectral Line
• Eigenvalues bifurcating from the continuum in two-dimensional potentials generating non-Hermitian gauge fields
• Superexponential amplification, power blowup, and solitons sustained by non-Hermitian gauge potentials
• Resilience of $\mathcal{P}\mathcal{T}$ symmetry against stochasticity in a gain-loss balanced oscillator