2 citations · 3 across the 3 of their papers we have counts for
7 papers · 1 filter
Exceptional non-Hermitian topological edge mode and its application to active matter
Kazuki Sone, Yuto Ashida, Takahiro Sagawa
Topological materials exhibit edge-localized scattering-free modes protected by their nontrivial bulk topology through the bulk-edge correspondence in Hermitian systems. While topo…
Continuous Phase Transition without Gap Closing in Non-Hermitian Quantum Many-Body Systems
Norifumi Matsumoto, Kohei Kawabata, Yuto Ashida +2
Contrary to the conventional wisdom in Hermitian systems, a continuous quantum phase transition between gapped phases is shown to occur without closing the energy gap in non-He…
Deep Reinforcement Learning Control of Quantum Cartpoles
Zhikang T. Wang, Yuto Ashida, Masahito Ueda
We generalize a standard benchmark of reinforcement learning, the classical cartpole balancing problem, to the quantum regime by stabilizing a particle in an unstable potential thr…
Learning the best thermoelectric nanoscale heat engines through evolving network topology
Yuto Ashida, Takahiro Sagawa
The quest to identify the best heat engine has been at the center of science and technology. Thermoelectric nanoscale heat engines convert heat flows into useful work in the form o…
Efficient variational approach to dynamics of a spatially extended bosonic Kondo model
Yuto Ashida, Tao Shi, Richard Schmidt +3
We develop an efficient variational approach to studying dynamics of a localized quantum spin coupled to a bath of mobile spinful bosons. We use parity symmetry to decouple the imp…
Anomalous Topological Active Matter
Kazuki Sone, Yuto Ashida
Active systems exhibit spontaneous flows induced by self-propulsion of microscopic constituents and can reach a nonequilibrium steady state without an external drive. Constructing…