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 …

The exploration of quantum‐inspired symmetries in optical and photonic systems has
witnessed immense research interest both fundamentally and technologically in a wide …

The so-called PT symmetric devices, which feature ε (− x)= ε (x)* associated with parity-time
symmetry, incorporate both gain and loss and can present a singular eigenvalue behaviour …

One of the Top Selling Physics Books according to YBP Library Services The exotic effects
of slow light have been widely observed in the laboratory. However, current literature fails to …

We show the controllable excitation transmission can be implemented based on the
topologically protected edge channel in the modulated Su-Schrieffer-Heeger model with …

We analyze the operation of 2× 2 switches composed of two coupled waveguides operating
on the basis of parity-time (PT) symmetry: the two waveguides differ through their gain or …

The lasing and coherent perfect absorption (CPA) properties of PT-symmetric microrings
with mixed index and gain gratings, externally coupled to a bus waveguide, are theoretically …

Multimode waveguides can be used as multichannel devices to push the transmission
bandwidth of optical signals to its limits, provided demultiplexing can be correctly performed …

Waveguide structures with an antisymmetric gain/loss profile were studied more than a
decade ago as benchmark tests for beam propagation methods. These structures attracted …

In devices consisting of a large number of coupled resonators, the coupling coefficients are
unlikely to be identical throughout the ensemble, owing to statistical fluctuations in the …