31 citations · 77 across the 6 of their papers we have counts for
6 papers
Quantum-Selected Configuration Interaction: classical diagonalization of Hamiltonians in subspaces selected by quantum computers
Keita Kanno, Masaya Kohda, Ryosuke Imai +4
We propose quantum-selected configuration interaction (QSCI), a class of hybrid quantum-classical algorithms for calculating the ground- and excited-state energies of many-electron…
Quantum Car-Parrinello Molecular Dynamics: A Cost-Efficient Molecular Simulation Method on Near-Term Quantum Computers
Kohdai Kuroiwa, Takahiro Ohkuma, Hirokazu Sato +1
In this paper, we propose a cost-reduced method for finite-temperature molecular dynamics on a near-term quantum computer, Quantum Car-Parrinello molecular dynamics (QCPMD). One of…
Quantum expectation-value estimation by computational basis sampling
Masaya Kohda, Ryosuke Imai, Keita Kanno +3
Measuring expectation values of observables is an essential ingredient in variational quantum algorithms. A practical obstacle is the necessity of a large number of measurements fo…
Bose polaron in spherical trap potentials: Spatial structure and quantum depletion
Junichi Takahashi, Ryosuke Imai, Eiji Nakano +1
We investigate how the presence of a localized impurity in a Bose-Einstein condensate of trapped cold atoms that interact with each other weakly and repulsively affects the profile…
Dynamical properties of the finite-size Dicke model coupled to a thermal reservoir
Ryosuke Imai, Yoshiya Yamanaka
We investigate the dynamical properties of the finite-size Dicke model coupled to a photon reservoir in the dispersive regime. The system-reservoir coupling in our Hamiltonian incl…
Stability of Symmetry Breaking States in Finite-size Dicke Model with Photon Leakage
Ryosuke Imai, Yoshiya Yamanaka
We investigate the finite-size Dicke model with photon leakage. It is shown that the symmetry breaking states, which are characterized by non-vanishing $\langle \hat{a} \rangle \ne…