19 citations · 51 across the 8 of their papers we have counts for
8 papers
Real-time dynamics of triplet-resonant tunneling driven by nonequilibrium phonons
Kazuyuki Kuroyama, Sasha R. Valentin, Arne Ludwig +4
Driven nonequilibrium systems can host emergent functionalities beyond equilibrium, but real-time access to excited-state dynamics remains limited. Here we report real-time measure…
Ultrastrong light-matter coupling in near-field coupled split-ring resonators revealed by photocurrent spectroscopy
Jing Huang, Jinkwan Kwoen, Yasuhiko Arakawa +2
Landau polaritons arising from the coupling between cyclotron resonance and terahertz split-ring resonators (SRRs) have served as a central platform for exploring ultrastrong light…
Phonon-mediated spin dynamics in a two-electron double quantum dot under a phonon temperature gradient
Kazuyuki Kuroyama, Sadashige Matsuo, Seigo Tarucha +1
We have theoretically studied phonon-mediated spin-flip processes of electrons in a GaAs double quantum dot (DQD) holding two spins, under a phonon temperature gradient over the DQ…
Coherent interaction of a-few-electron quantum dot with a terahertz optical resonator
Kazuyuki Kuroyama, Jinkwan Kwoen, Yasuhiko Arakawa +1
We have investigated light-matter hybrid excitations in a quantum dot (QD)-terahertz (THz) optical resonator coupled system. We fabricate a gate-defined QD in the vicinity of a THz…
Real-time observation of charge-spin cooperative dynamics driven by a nonequilibrium phonon environment
Kazuyuki Kuroyama, Sadashige Matsuo, Jo Muramoto +6
Quantum dots are recognized as a suitable platform for studying thermodynamic phenomena involving single electronic charges and spins in nano-scale devices. However, such a thermod…
Full Counting Statistics of Spin-Flip/Conserving Charge Transitions in Pauli-Spin Blockade
Sadashige Matsuo, Kazuyuki Kuroyama, Shunsuke Yabunaka +4
We investigate the full counting statistics (FCS) of spin-conserving and spin-flip charge transitions in Pauli-spin blockade regime of a GaAs double quantum dot. A theoretical mode…
Quantum state transfer of angular momentum via single electron photo-excitation from a Zeeman-resolved light hole
Kazuyuki Kuroyama, Marcus Larsson, Jo Muramoto +9
Electron spins in GaAs quantum dots have been used to make qubits with high-fidelity gating and long coherence time, necessary ingredients in solid-state quantum computing. The qua…
A single eletron-photon pair generation from a single polarization-entangled photon pair
Kazuyuki Kuroyama, Marcus Larsson, Sadashige Matsuo +6
We demonstrate paired generation of a single photo-electron in a quantum dot and a single photon from a single polarization-entangled photon pair that is generated by spontaneous p…