Recent progress on nonlinear properties of parity-time (PT)-symmetric systems is
comprehensively reviewed in this article. PT symmetry started out in non-Hermitian quantum …

One of the challenges of the modern photonics is to develop all‐optical devices enabling
increased speed and energy efficiency for transmitting and processing information on an …

A major challenge for practical wireless power transfer (WPT) applications is to attain stable
power transfer with high and constant transfer efficiency under a dynamic change of …

We provide an experimental framework where periodically driven PT-symmetric systems can
be investigated. The setup, consisting of two ultra high frequency oscillators coupled by a …

Abstract A ${\mathcal {P}}{\mathcal {T}} $-symmetric nonlinear Schrödinger dimer is a two-
site discrete nonlinear Schrödinger equation with one site losing and the other one gaining …

We show that a pair of coupled nonlinear oscillators, of which one oscillator has positive and
the other one negative damping of equal rate, can form a Hamiltonian system. Small …

This paper examines chains of N coupled harmonic oscillators. In isolation, the j th oscillator
(1≤ j≤ N) has the natural frequency ω j and is described by the Hamiltonian 1 2 pj 2+ 1 2 ω …

The Hamiltonian for a PT-symmetric chain of coupled oscillators is constructed. It is shown
that if the loss-gain parameter γ is uniform for all oscillators, then as the number of oscillators …

The standard PT-symmetric dimer is a linearly coupled two-site discrete nonlinear
Schrödinger equation with one site losing and the other one gaining energy at the same …

In quantum mechanics, with the groundbreaking discovery of parity-time symmetry (PT-
symmetry), Bender and Boettcher unfold the nature of the non-Hermitian Hamiltonian to …