505 citations · 2.2k across the 42 of their papers we have counts for
7 papers · 1 filter
Fast probe of local electronic states in nanostructures utilizing a single-lead quantum dot
Tomohiro Otsuka, Shinichi Amaha, Takashi Nakajima +8
Transport measurements are powerful tools to probe electronic properties of solid-state materials. To access properties of local electronic states in nanostructures, such as local…
Tunneling induced spin dynamics in a quantum dot-lead hybrid system
Tomohiro Otsuka, Takashi Nakajima, Matthieu R. Delbecq +11
Semiconductor quantum dots (QDs) offer a platform to explore the physics of quantum electronics including spins. Electron spins in QDs are considered good candidates for quantum bi…
Detection and control of charge states in a quintuple quantum dot
Takumi Ito, Tomohiro Otsuka, Shinichi Amaha +8
A semiconductor quintuple quantum dot with two charge sensors and an additional contact to the center dot from an electron reservoir is fabricated to demonstrate the concept of sca…
Coherent electron-spin-resonance manipulation of three individual spins in a triple quantum dot
Akito Noiri, Jun Yoneda, Takashi Nakajima +8
Quantum dot arrays provide a promising platform for quantum information processing. For universal quantum simulation and computation, one central issue is to demonstrate the exhaus…
Coherent transfer of electron spin correlations assisted by dephasing noise
Takashi Nakajima, Matthieu R. Delbecq, Tomohiro Otsuka +10
Quantum coherence of superposed states, especially of entangled states, is indispensable for many quantum technologies. However, it is vulnerable to environmental noises, posing a…
A fault-tolerant addressable spin qubit in a natural silicon quantum dot
K. Takeda, J. Kamioka, T. Otsuka +8
Fault-tolerant quantum operation is a key requirement for the development of quantum computing. This has been realized in various solid-state systems including isotopically purifie…
Quantum dephasing in a gated GaAs triple quantum dot due to nonergodic noise
M. R. Delbecq, T. Nakajima, P. Stano +8
We extract the phase coherence of a qubit defined by singlet and triplet electronic states in a gated GaAs triple quantum dot, measuring on timescales much shorter than the decorre…