Obtaining ground states of the xxz model using the quantum annealing with inductively coupled superconducting flux qubits

T Imoto, Y Seki, Y Matsuzaki - Journal of the Physical Society of …, 2022 - journals.jps.jp
Obtaining ground states of Hamiltonians is important in the condensed matter physics and
the quantum chemistry. The interaction Hamiltonians typically contain not only diagonal but …

Nonstoquastic catalyst for bifurcation-based quantum annealing of the ferromagnetic -spin model

Y Susa, T Imoto, Y Matsuzaki - Physical Review A, 2023 - APS
Introducing a nonstoquastic catalyst is a promising avenue to improve quantum annealing
with the transverse field. In the present paper, we propose a nonstoquastic catalyst for …

Quantum annealing with twisted fields

T Imoto, Y Seki, Y Matsuzaki… - New Journal of …, 2022 - iopscience.iop.org
Quantum annealing (QA) is a promising method for solving combinational optimization
problems and performing quantum chemical calculations. The main sources of errors in QA …

Design and analysis of new ultra low power CMOS Based flip-flop approaches

NR Jangam, L Guthikinda, GP Ramesh - Distributed Computing and …, 2022 - Springer
The flip flops are essential part of the clocking circuits in complementary metal oxide
semiconductor circuit based designs. The adiabatic flip flops are more useful in digital …

Analysis of the shortest vector problems with quantum annealing to search the excited states

K Ura, T Imoto, T Nikuni, S Kawabata… - Japanese Journal of …, 2023 - iopscience.iop.org
The shortest vector problem (SVP) is one of the lattice problems and is the mathematical
basis for lattice-based cryptography, which is expected to be post-quantum cryptography …

Direct estimation of the energy gap between the ground state and excited state with quantum annealing

Y Matsuzaki, H Hakoshima, K Sugisaki… - Japanese Journal of …, 2021 - iopscience.iop.org
In quantum chemistry, it is important to estimate an energy gap between a ground state and
an excited state of molecular Hamiltonians. In previous researches, it was necessary to …

Guaranteed-accuracy quantum annealing

T Imoto, Y Seki, Y Matsuzaki, S Kawabata - Physical Review A, 2022 - APS
Quantum chemistry calculations constitute an important application of quantum annealing
(QA). For practical applications in quantum chemistry, it is essential to estimate the ground …

Quantum annealing with error mitigation

Y Shingu, T Nikuni, S Kawabata, Y Matsuzaki - Physical Review A, 2024 - APS
Quantum annealing (QA) is one of the methods to prepare a ground state of a problem
Hamiltonian. In the absence of noise, QA can accurately estimate the ground-state energy if …

Generation of multipartite entanglement between spin-1 particles with bifurcation-based quantum annealing

Y Matsuzaki, T Imoto, Y Susa - Scientific Reports, 2022 - nature.com
Quantum annealing is a way to solve a combinational optimization problem where quantum
fluctuation is induced by transverse fields. Recently, a bifurcation-based quantum annealing …

Excited state search using quantum annealing

Y Seki, Y Matsuzaki, S Kawabata - Journal of the Physical Society of …, 2021 - journals.jps.jp
Quantum annealing (QA) is one of the ways of finding ground states of problem
Hamiltonians. We initially apply transverse fields corresponding to a driver Hamiltonian and …