404 citations · 2.5k across the 36 of their papers we have counts for
6 papers · 1 filter
Emergent long-range interaction and state-selective localization in a strongly driven model
Kentaro Sugimoto, Seiji Yunoki
The nonlinear effect of a driving force in periodically driven quantum many-body systems can be systematically investigated by analyzing the effective Floquet Hamiltonian. In parti…
Phase transitions in the frustrated Ising ladder with stoquastic and nonstoquastic catalysts
Kabuki Takada, Shigetoshi Sota, Seiji Yunoki +3
The role of nonstoquasticity in the field of quantum annealing and adiabatic quantum computing is an actively debated topic. We study a strongly-frustrated quasi-one-dimensional qu…
Discretized quantum adiabatic process for free fermions and comparison with the imaginary-time evolution
Tomonori Shirakawa, Kazuhiro Seki, Seiji Yunoki
Motivated by recent progress of quantum technologies, we study a discretized quantum adiabatic process for a one-dimensional free fermion system described by a variational wave fun…
Quantum Power Method by a Superposition of Time-Evolved States
Kazuhiro Seki, Seiji Yunoki
We propose a quantum-classical hybrid algorithm of the power method, here dubbed as quantum power method, to evaluate with quantum computers, where i…
Emergence of a thermal equilibrium in a subsystem of a pure ground state by quantum entanglement
Kazuhiro Seki, Seiji Yunoki
By numerically exact calculations of spin-1/2 antiferromagnetic Heisenberg models on small clusters, we demonstrate that quantum entanglement between subsystems and in a pu…
Symmetry-adapted variational quantum eigensolver
Kazuhiro Seki, Tomonori Shirakawa, Seiji Yunoki
We propose a scheme to restore spatial symmetry of Hamiltonian in the variational-quantum-eigensolver (VQE) algorithm for which the quantum circuit structures used usually break th…