608 citations · 1.3k across the 26 of their papers we have counts for
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Coexistence of parallel and series current paths in parallel-coupled double quantum dots in nonlinear transport regime
Tsuyoshi Hatano, Toshihiro Kubo, Shinichi Amaha +2
We investigated the electron transport properties of parallel-coupled double quantum dot (DQD) devices under magnetic fields. When a low magnetic field was applied, electron tunnel…
Coulomb interaction-induced Aharonov-Bohm oscillations
Toshihiro Kubo, Yasuhiro Tokura
We study the Coulomb interaction-induced Aharonov-Bohm (AB) oscillations in the linear response transport through a remote quantum dot which has no tunnel coupling but has Coulomb…
Quantum adiabatic pumping by modulating tunnel phase in quantum dots
Masahiko Taguchi, Satoshi Nakajima, Toshihiro Kubo +1
In a mesoscopic system, under zero bias voltage, a finite charge is transferred by quantum adiabatic pumping by adiabatically and periodically changing two or more control paramete…
Interaction effect on adiabatic pump of charge and spin in quantum dot
Satoshi Nakajima, Masahiko Taguchi, Toshihiro Kubo +1
We investigate the pumped charge and spin at zero-bias by adiabatic modulation of two control parameters using the full counting statistics with quantum master equation approach. F…
Fluctuation theorem for heat transport probed by a thermal electrode
Y. Utsumi, O. Entin-Wohlman, A. Aharony +2
We analyze the full-counting statistics of the electric heat current flowing in a two-terminal quantum conductor whose temperature is probed by a third electrode ("probe electrode"…
Power dependence of electric dipole spin resonance
Yasuhiro Tokura, Toshihiro Kubo, William John Munro
We develop a formalism of electric dipole spin resonance (EDSR) based on slanting magnetic field, where we especially investigate the microwave amplitude dependence. With increasin…
Excitation spectroscopy of few-electron states in artificial diatomic molecules
T. Hatano, Y. Tokura, S. Amaha +3
We study the excitation spectroscopy of few-electron, parallel coupled double quantum dots (QDs). By applying a finite source drain voltage to a double QD (DQD), the first excited…
Backaction Dephasing by a Quantum Dot Detector
Toshihiro Kubo, Yasuhiro Tokura
We derive an analytical expression for the backaction dephasing rate, which characterizes the disturbance induced by coupling with an environment containing a quantum dot detector…
Phase and amplitude of Aharonov-Bohm oscillations in nonlinear three-terminal transport through a double quantum dot
Toshihiro Kubo, Yuki Ichigo, Yasuhiro Tokura
We study three-terminal linear and nonlinear transport through an Aharonov-Bohm interferometer containing a double quantum dot using the nonequilibrium Green's function method. Und…
Kondo effects and shot noise enhancement in a laterally coupled double quantum dot
Toshihiro Kubo, Yasuhiro Tokura, Seigo Tarucha
The spin and orbital Kondo effects and the related shot noise for a laterally coupled double quantum dot are studied taking account of coherent indirect coupling via a reservoir. W…
Aharonov-Bohm Oscillations Changed by Indirect Interdot Tunneling via Electrodes in Parallel-Coupled Vertical Double Quantum Dots
T. Hatano, T. Kubo, Y. Tokura +3
Aharonov-Bohm (AB) oscillations are studied for a parallel coupled vertical double quantum dot with a common source and drain electrode. We observe AB oscillations of current via a…
Transport properties of two laterally coupled vertical quantum dots in series with tunable inter-dot coupling
T. Hatano, S. Amaha, T. Kubo +5
We describe the electronic properties of a double dot for which the lateral coupling between the two vertical dots can be controlled in-situ with a center gate voltage (Vc) and the…
Dephasing in an Aharonov-Bohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor
T. Kubo, Y. Tokura, S. Tarucha
We theoretically investigated the dephasing in an Aharonov-Bohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor. We empl…
Coherent Manipulation of Individual Electron Spin in a Double Quantum Dot Integrated with a Micro-Magnet
Toshiaki Obata, Michel Pioro-Ladriere, Yasuhiro Tokura +5
We report the coherent manipulation of electron spins in a double quantum dot integrated with a micro-magnet. We performed electric dipole spin resonance experiments in the continu…
Microwave band on-chip coil technique for single electron spin resonance in a quantum dot
Toshiaki Obata, Michel Pioro-Ladriere, Toshihiro Kubo +3
Microwave band on-chip microcoils are developed for the application to single electron spin resonance measurement with a single quantum dot. Basic properties such as characteristic…
Micro-magnets for coherent control of spin-charge qubit in lateral quantum dots
M. Pioro-Ladriere, Y. Tokura, T. Obata +2
A lateral quantum dot design for coherent electrical manipulation of a two-level spin-charge system is presented. Two micron-size permanent magnets integrated to high-frequency ele…
Interference through quantum dots
Y. Tokura, H. Nakano, T. Kubo
We discuss the effect of quantum interference on transport through a quantum dot system. We introduce an indirect coherent coupling parameter alpha, which provides constructive/des…
Electron transport through Aharonov-Bohm interferometer with laterally coupled double quantum dots
Toshihiro Kubo, Yasuhiro Tokura, Tsuyoshi Hatano +1
We theoretically investigate electron transport through an Aharonov-Bohm interferometer containing laterally coupled double quantum dots. We introduce the indirect coupling paramet…
Electron Transport in Magnetic-Field-Induced Quasi-One-Dimensional Electron Systems in Semiconductor Nanowhiskers
Toshihiro Kubo, Yasuhiro Tokura
Many-body effects on tunneling of electrons in semiconductor nanowhiskers are investigated in a magnetic quantum limit. We consider the system with which bulk and edge states coexi…
Many-Body Effects on Tunneling of Electrons in Magnetic-Field-Induced Quasi One-Dimensional Electron Systems in Semiconductor Nanowhiskers
Toshihiro Kubo, Yasuhiro Tokura
Effects of the electron-electron interaction on tunneling in a semiconductor nanowhisker are studied in a magnetic quantum limit. We consider the system with which bulk and edge st…
Many-Body Effects on the Transmission Probability through a Tunnel Junction in a Strong Magnetic Field
Toshihiro Kubo, Arisato Kawabata
We investigate effects of electron-electron interaction on the transmission probability of electrons through a tunnel junction in a strong magnetic field. We start with the Hartree…