13 citations · 33 across the 8 of their papers we have counts for
8 papers
Remote Cross-resonance Gate between Superconducting Fixed-frequency Qubits
Mari Ohfuchi, Shintaro Sato
High-fidelity quantum state transfer and remote entanglement between superconducting fixed-frequency qubits have not yet been realized. In this study, we propose an alternative rem…
Microwave-to-Optical Quantum Transduction Utilizing the Topological Faraday Effect of Topological Insulator Heterostructures
Akihiko Sekine, Mari Ohfuchi, Yoshiyasu Doi
The quantum transduction between microwave and optical photons is essential for realizing scalable quantum computers with superconducting qubits. Due to the large frequency differe…
Quantum spin Hall states in the lateral heteromonolayers of WTe2-MoTe2
Mari Ohfuchi, Akihiko Sekine
We used density functional theory to investigate the lateral heteromonolayers of WTe2 and MoTe2. We confirmed that topologically nontrivial and trivial phases are energetically fav…
Emergent One-Dimensional Helical Channel in Higher-Order Topological Insulators with Step Edges
Akihiko Sekine, Manabu Ohtomo, Kenichi Kawaguchi +1
We study theoretically the electronic structure of three-dimensional (3D) higher-order topological insulators in the presence of step edges. We numerically find that a 1D conductin…
Electronic properties of the steps in bilayer Td-WTe2
Mari Ohfuchi, Akihiko Sekine, Manabu Ohtomo +1
Monolayer WTe2 stripes are quantum spin Hall (QSH) insulators. Density functional theory was used for investigating the electronic properties of the stripes and steps in bilayer Td…
Josephson junctions of Weyl semimetal induced by spontaneous nucleation of superconductor
Manabu Ohtomo, Russell S. Deacon, Masayuki Hosoda +7
We report on the fabrication of Josephson junction devices with weak links utilizing the Weyl and higher-order topological semimetal . We show that $\text{WTe}_2\text…
Small bandgap features achieved in atomically precise 17-atom-wide armchair-edged graphene nanoribbons
Junichi Yamaguchi, Hironobu Hayashi, Hideyuki Jippo +9
Graphene nanoribbons (GNRs) synthesized using a bottom-up technique potentially enable future electronic devices owing to the tunable electronic structures depending on the well-de…
Anisotropic Optical Properties of Layered Germanium Sulfide
Dezhi Tan, Hong En Lim, Feijiu Wang +7
Two-dimensional (2D) layered materials, transition metal dichalcogenides and black phosphorus, have attracted much interest from the viewpoints of fundamental physics and device ap…