73 citations · 338 across the 12 of their papers we have counts for
5 papers · 1 filter
Topological Corner States in Bilayer and Trilayer Systems with Vertically Stacked Topological Heterostructures
Natsuko Ishida, Motohiko Ezawa, Guangtai Lu +4
We investigate bilayer and trilayer systems composed of topologically distinct, vertically stacked layers, forming topological heterostructures based on the Benalcazar-Bernevig-Hug…
Nonadiabatic nonlinear non-Hermitian quantized pumping
Motohiko Ezawa, Natsuko Ishida, Yasutomo Ota +1
We analyze a quantized pumping in a nonlinear non-Hermitian photonic system with nonadiabatic driving. The photonic system is made of a waveguide array, where the distances between…
Supersymmetric non-Hermitian topological interface laser
Motohiko Ezawa, Natsuko Ishida, Yasutomo Ota +1
We investigate laser emission at the interface of a topological and trivial phases with loss and gain. The system is described by a Su-Schrieffer-Heeger model with site-dependent h…
Photoluminescence of high-density exciton-polariton condensates
Natsuko Ishida, Tim Byrnes, Tomoyuki Horikiri +2
We examine the photoluminescence of highly-excited exciton-polariton condensates in semiconductor microcavities. Under strong pumping, exciton-polariton condensates have been obser…
Photoluminescence of a microcavity quantum dot system in the quantum strong-coupling regime
Natsuko Ishida, Tim Byrnes, Franco Nori +1
The Jaynes-Cummings model, describing the interaction between a single two-level system and a photonic mode, has been used to describe a large variety of systems, ranging from cavi…