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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…
Footprints of hyperfine, spin-orbit, and decoherence effects in Pauli spin blockade
T. Fujita, P. Stano, G. Allison +8
We detect in real time inter-dot tunneling events in a weakly coupled two electron double quantum dot in GaAs. At finite magnetic fields, we observe two characteristic tunneling ti…
Single photoelectron spin detection and angular momentum transfer in a gate defined quantum dot
Takafumi Fujita, Kazuhiro Morimoto, Haruki Kiyama +7
Recent innovations in fabricating nanoscale confined spin systems have enabled investigation of fundamental quantum correlations between single quanta of photons and matter states.…
Tuning the electrically evaluated electron Lande g factor in GaAs quantum dots and quantum wells of different well widths
G. Allison, T. Fujita, K. Morimoto +9
We evaluate the Lande g factor of electrons in quantum dots (QDs) fabricated from GaAs quantum well (QW) structures of different well width. We first determine the Lande electron g…
Single Photoelectron Detection after Selective Excitation of Electron-Heavy Hole and Electron-Light Hole Pairs in Double Quantum Dots
K. Morimoto, T. Fujita, G. Allison +9
We demonstrate the real-time detection of single photogenerated electrons in two different lateral double quantum dots made in AlGaAs/GaAs/AlGaAs quantum wells having a thin or a t…
Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
M. T. Deng, C. L. Yu, G. Y. Huang +3
We report on the observation of excitation of Majorana fermions in a Nb-InSb nanowire quantum dot-Nb hybrid system. The InSb nanowire quantum dot is formed between the two Nb conta…
Thermally driven ballistic rectifer
Jason Matthews, David Sánchez, Marcus Larsson +1
The response of electric devices to an applied thermal gradient has, so far, been studied almost exclusively in two-terminal devices. Here we present measurements of the response t…