93 citations · 667 across the 57 of their papers we have counts for
58 papers
Continuous-time evolution via probabilistic angle interpolation and its applications
Tomoya Hayata, Yuta Kikuchi
We explore the applicability of a stochastic time-evolution algorithm based on probabilistic angle interpolation. To simplify the pre-processing of the algorithm, we take the conti…
Quantum anomaly for benchmarking quantum computing
Tomoya Hayata, Arata Yamamoto
Given the rapid advances in quantum computing hardware, establishing strategies for verifying the correctness of quantum computations has become increasingly important. Exploiting…
Onset of thermalization of q-deformed SU(2) Yang-Mills theory on a trapped-ion quantum computer
Tomoya Hayata, Yoshimasa Hidaka, Yuta Kikuchi
Nonequilibrium dynamics of quantum many-body systems is one of the main targets of quantum simulations. This focus - together with rapid advances in quantum-computing hardware - ha…
Phases of the -deformed Yang-Mills theory at large
Tomoya Hayata, Yoshimasa Hidaka, Hiromasa Watanabe
We investigate the -dimensional -deformed Yang-Mills theory in the lattice Hamiltonian formalism, which is characterized by three parameters: the numbe…
Dissipative ground-state preparation of a quantum spin chain on a trapped-ion quantum computer
Kazuhiro Seki, Yuta Kikuchi, Tomoya Hayata +1
We demonstrate a dissipative protocol for ground-state preparation of a quantum spin chain on a trapped-ion quantum computer. As a first step, we derive a Kraus representation of a…
Digital quantum simulation of many-body localization crossover in a disordered kicked Ising model
Tomoya Hayata, Kazuhiro Seki, Seiji Yunoki
Simulating nonequilibrium dynamics of quantum many-body systems is one of the most promising applications of quantum computers. However, a faithful digital quantum simulation of th…
Phase transition on superfluid vortices in Higgs-Confinement crossover
Tomoya Hayata, Yoshimasa Hidaka, Dan Kondo
We propose a novel method to distinguish states of matter by identifying spontaneous symmetry breaking on extended objects, such as vortices, even in the absence of a bulk phase tr…
Floquet evolution of the q-deformed \texorpdfstring{SU(3)}{SU(3)1} Yang-Mills theory on a two-leg ladder
Tomoya Hayata, Yoshimasa Hidaka
We simulate Floquet time-evolution of a truncated SU(3) lattice Yang-Mills theory on a two-leg ladder geometry under open boundary conditions using IBM's superconducting 156-qubit…
Floquet prethermalization of lattice gauge theory on superconducting qubits
Tomoya Hayata, Kazuhiro Seki, Arata Yamamoto
Simulating nonequilibirum dynamics of a quantum many-body system is one of the promising applications of quantum computing. We simulate the time evolution of one-dimensional ${\bf…
Simulating Floquet scrambling circuits on trapped-ion quantum computers
Kazuhiro Seki, Yuta Kikuchi, Tomoya Hayata +1
Complex quantum many-body dynamics spread initially localized quantum information across the entire system. Information scrambling refers to such a process, whose simulation is one…
Non-Hermitian -wave superfluid and effects of the inelastic three-body loss in a one-dimensional spin-polarized Fermi gas
Hiroyuki Tajima, Yuta Sekino, Daisuke Inotani +3
We theoretically investigate non-Hermitian -wave Fermi superfluidity in one-dimensional spin-polarized Fermi gases which is relevant to recent ultracold atomic experiments. Cons…
Dense with matrix product states
Tomoya Hayata, Yoshimasa Hidaka, Kentaro Nishimura
We study one-flavor and lattice QCD in () dimensions at zero temperature and finite density using matrix product states and the density matri…
Chiral fermion on quantum computers
Arata Yamamoto, Tomoya Hayata, Katsumasa Nakayama
Quantum computation often suffers from artificial symmetry breaking. We should strive to suppress the artifact both by theoretical and technological improvements. The theoretical f…
Dynamical chirality production in one dimension
Tomoya Hayata, Katsumasa Nakayama, Arata Yamamoto
We discuss the quantum computation of dynamical chirality production in lattice gauge theory. Although the chirality of a lattice fermion is complicated in general dimensions, it c…
Two-dimensional lattice with an imaginary magnetic field
Tomoki Ozawa, Tomoya Hayata
We introduce a two-dimensional non-Hermitian lattice model with an imaginary magnetic field and elucidate various unique features which are absent in Hermitian lattice models with…
deformed formulation of Hamiltonian SU(3) Yang-Mills theory
Tomoya Hayata, Yoshimasa Hidaka
We study Yang-Mills theory in dimensions based on networks of Wilson lines. With the help of the deformation, networks respect the (discretized) $\math…
Chiral fermion in the Hamiltonian lattice gauge theory
Tomoya Hayata, Katsumasa Nakayama, Arata Yamamoto
We discuss the chiral fermion in the Hamiltonian formalism of lattice gauge theory. Although the naive chiral charge operator does not commute with the Hamiltonian, the commutable…
String-net formulation of Hamiltonian lattice Yang-Mills theories and quantum many-body scars in a nonabelian gauge theory
Tomoya Hayata, Yoshimasa Hidaka
We study the Hamiltonian lattice Yang-Mills theory based on spin networks that provide a useful basis to represent the physical states satisfying the Gauss law constraints. We focu…
Non-Hermitian topological Fermi superfluid near the -wave unitary limit
Hiroyuki Tajima, Yuta Sekino, Daisuke Inotani +3
We theoretically discuss the non-Hermitian superfluid phase transition in one-dimensional two-component Fermi gases near the -wave Feshbach resonance accompanied by the two-body…
Lattice Lindblad simulation
Tomoya Hayata, Yoshimasa Hidaka, Arata Yamamoto
We perform the real-time lattice simulation of an open quantum system, which is based on the Schwinger-Keldysh path integral representation of the Lindblad formalism. Although the…
Dissipation-induced dynamical phase transition in postselected quantum trajectories
Tomoya Hayata, Yoshimasa Hidaka, Arata Yamamoto
It is known that effects of dissipation or measurement backreaction in postselected quantum trajectories are described by non-Hermitian Hamiltonian, but their consequences in real-…
Lindblad evolution without the sign problem
Tomoya Hayata
Quantum Monte Carlo is one of the most powerful numerical tools for studying nonpeturbative properties of quantum many-body systems. However, its application to real-time problems…
Non-Hermitian Hubbard model without the sign problem
Tomoya Hayata, Arata Yamamoto
We study the Hubbard model with non-Hermitian asymmetric hopping terms. The conjugate hopping terms are introduced for two spin components so that the negative sign is canceled out…
Diagnosis of information scrambling from Hamiltonian evolution under decoherence
Tomoya Hayata, Yoshimasa Hidaka, Yuta Kikuchi
We apply a quantum teleportation protocol based on the Hayden-Preskill thought experiment to quantify how scrambling a given quantum evolution is. It has an advantage over the dire…