activity
20062026
most citedObservation and manipulation of quantum interference in a superconducting Kerr parametric oscillator

45 citations · 322 across the 48 of their papers we have counts for

collaborators

48 papers

quant-ph2026

Realisation of a Protected Cat-Qutrit Manifold via Engineered Quantum Tunnelling

Sangil Kwon, Daisuke Hoshi, Toshiaki Nagase +8

Engineering quantum tunnelling in phase space has emerged as a viable method for creating a protected logical qubit manifold with biased-noise properties. A promising approach is t…

cond-mat.quant-gas2025

Transverse Field Dependence of the Ground State in the Z2 Bose-Hubbard Model

Yuma Watanabe, Shohei Watabe, Tetsuro Nikuni

The study of interaction between the particle and lattice degrees of freedom is one of the central interests in the quantum many-body systems. The Z2 Bose-Hubbard model has been pr…

cond-mat.quant-gas2024

Emergence of nonequilibrium Lieb excitations in periodically driven strongly interacting bosons

Hoshu Hiyane, Giedrius Žlabys, Thomas Busch +1

We study the exact nonequilibrium spectral function of a gas of strongly correlated Tonks-Girardeau bosons subjected to a strong periodic drive. Utilizing the theory of Floquet spe…

quant-ph2024★ 1 cited

Quantum Algorithm for Shortest Vector Problems with Folded Spectrum Method

Kota Mizuno, Shohei Watabe

Quantum annealing has been recently studied to solve the shortest vector problem (SVP), where the norm of a lattice point vector is mapped to the problem Hamiltonian with the qudit…

quant-ph2024★ 15 cited

Entangling Schrödinger's cat states by bridging discrete- and continuous-variable encoding

Daisuke Hoshi, Toshiaki Nagase, Sangil Kwon +9

In quantum information processing, two primary research directions have emerged: one based on discrete variables (DV) and the other on the structure of quantum states in a continuo…

quant-ph2024★ 6 cited

Two-Step Quantum Search Algorithm for Solving Traveling Salesman Problems

Rei Sato, Gordon Cui, Kazuhiro Saito +3

Quantum search algorithms, such as Grover's algorithm, are anticipated to efficiently solve constrained combinatorial optimization problems. However, applying these algorithms to t…