4 papers
Fast wave transport in two-dimensional -symmetric lattices
Sayan Jana, Lea Sirota
We present a theoretical investigation of wave dynamics in two-dimensional non-Hermitian -symmetric lattices, where onsite, as well as inter-site control couplings ar…
Realizing non-Hermitian tunneling phenomena using non-reciprocal active acoustic metamaterials
Felix Langfeldt, Joe Tan, Sayan Jana +1
Non-reciprocal systems have been shown to exhibit various interesting wave phenomena, such as the non-Hermitian skin effect, which causes accumulation of modes at boundaries. Recen…
Supersonic wave propagation in active non-Hermitian acoustic metamaterials
Kangkang Wang, Felix Langfeldt, Chen Shen +4
Obtaining a group velocity higher than the speed of sound in a waveguide is a challenging task in acoustic wave engineering. Even more challenging is to achieve this velocity incre…
Noise avalanche and its quantum quenching in bosonic chains with random off-diagonal disorder
Vladislav Stefanov, Andre Stefanov, Lea Sirota +2
Here we discuss a phenomenon of sharp increase in the photon number noise at initial stages of propagation in tight-binding bosonic chains with off-diagonal disorder. Such a "noise…