261 citations · 1.6k across the 41 of their papers we have counts for
41 papers
Geometric modulation of transition and survival intensities in non-Hermitian systems
Ryu Frieson, Takashi Oka, Hideaki Obuse
The time evolution of non-Hermitian systems is generally nonunitary. Dynamics governed by time-dependent non-Hermitian Hamiltonians lead to a variety of novel phenomena, one of whi…
Introducing a Kondo-type interaction to the model of quantum walkers
Manami Yamagishi, Naomichi Hatano, Kohei Kawabata +4
We introduce a model of discrete-time quantum walkers interacting with a lozalized magnetic impurity. Each quantum walker interacts with an impurity, through which multiple quantum…
Fast and high-fidelity transfer of edge states via dynamical control of topological phases and effects of dissipation
Yuuki Kanda, Yusuke Fujisawa, Kousuke Yakubo +2
Topological edge states are robust against symmetry-preserving perturbations and noise, making them promising for quantum information and computation, particularly in topological q…
Topological transition between gapless phases in quantum walks
Ranjith R Kumar, Hideaki Obuse
Topological gapless phases of matter have been a recent interest among theoretical and experimental condensed matter physicists. Fermionic chains with extended nearest neighbor cou…
Bulk-Edge Correspondence for Point-Gap Topological Phases in Junction Systems
Geonhwi Hwang, Hideaki Obuse
The bulk-edge correspondence is one of the most important ingredients in the theory of topological phases of matter. While the bulk-edge correspondence is applicable for Hermitian…
Topological Phases in a PT-Symmetric Dissipative Kitaev Chain
Makio Kawasaki, Hideaki Obuse
We study a topological phase in the dissipative Kitaev chain described by the Markovian quantum master equation. Based on the correspondence between Lindbladians, which generate th…