Dynamics of hole singlet triplet qubits with large g-factor differences
| Autor: | Daniel Jirovec, Philipp M. Mutter, Andrea Hofmann, Alessandro Crippa, Marek Rychetsky, David L. Craig, Josip Kukucka, Frederico Martins, Andrea Ballabio, Natalia Ares, Daniel Chrastina, Giovanni Isella, Guido Burkard, Georgios Katsaros |
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| Rok vydání: | 2021 |
| Předmět: |
quantum wells
Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) g-factor General Physics and Astronomy FOS: Physical sciences ddc:530 Condensed Matter::Strongly Correlated Electrons qubits SPIN QUBIT ELECTRON quantum wells qubits spin-orbit coupling g-factor Condensed Matter::Mesoscopic Systems and Quantum Hall Effect spin-orbit coupling |
| Zdroj: | Physical review letters 128 (2022): 126803-1–126803-6. doi:10.1103/PhysRevLett.128.126803 info:cnr-pdr/source/autori:Jirovec D.; Mutter P.M.; Hofmann A.; Crippa A.; Rychetsky M.; Craig D.L.; Kukucka J.; Martins F.; Ballabio A.; Ares N.; Chrastina D.; Isella G.; Burkard G.; Katsaros G./titolo:Dynamics of Hole Singlet-Triplet Qubits with Large g-Factor Differences/doi:10.1103%2FPhysRevLett.128.126803/rivista:Physical review letters (Print)/anno:2022/pagina_da:126803-1/pagina_a:126803-6/intervallo_pagine:126803-1–126803-6/volume:128 |
| DOI: | 10.48550/arxiv.2111.05130 |
| Popis: | The spin-orbit interaction permits to control the state of a spin qubit via electric fields. For holes it is particularly strong, allowing for fast all electrical qubit manipulation, and yet an in-depth understanding of this interaction in hole systems is missing. Here we investigate, experimentally and theoretically, the effect of the cubic Rashba spin-orbit interaction on the mixing of the spin states by studying singlet-triplet oscillations in a planar Ge hole double quantum dot. Landau-Zener sweeps at different magnetic field directions allow us to disentangle the effects of the spin-orbit induced spin-flip term from those caused by strongly site-dependent and anisotropic quantum dot g tensors. Our work, therefore, provides new insights into the hole spin-orbit interaction, necessary for optimizing future qubit experiments. published |
| Databáze: | OpenAIRE |
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