Dynamics of hole singlet-triplet qubits with large g-factor differences
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...
| Asıl Yazarlar: | , , , , , , , , , , , , , |
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| Materyal Türü: | Journal article |
| Dil: | English |
| Baskı/Yayın Bilgisi: |
American Physical Society
2022
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| _version_ | 1826315026011521024 |
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| author | Jirovec, D Mutter, PM Hofmann, A Crippa, A Rychetsky, M Craig, DL Kukucka, J Martins, F Ballabio, A Ares, N Chrastina, D Isella, G Burkard, G Katsaros, G |
| author_facet | Jirovec, D Mutter, PM Hofmann, A Crippa, A Rychetsky, M Craig, DL Kukucka, J Martins, F Ballabio, A Ares, N Chrastina, D Isella, G Burkard, G Katsaros, G |
| author_sort | Jirovec, D |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-12-09T03:18:31Z |
| format | Journal article |
| id | oxford-uuid:6b8fd164-056a-40d2-91ce-4dba546baf5c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-12-09T03:18:31Z |
| publishDate | 2022 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:6b8fd164-056a-40d2-91ce-4dba546baf5c2024-10-30T16:30:30ZDynamics of hole singlet-triplet qubits with large g-factor differencesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6b8fd164-056a-40d2-91ce-4dba546baf5cEnglishSymplectic ElementsAmerican Physical Society2022Jirovec, DMutter, PMHofmann, ACrippa, ARychetsky, MCraig, DLKukucka, JMartins, FBallabio, AAres, NChrastina, DIsella, GBurkard, GKatsaros, GThe 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. |
| spellingShingle | Jirovec, D Mutter, PM Hofmann, A Crippa, A Rychetsky, M Craig, DL Kukucka, J Martins, F Ballabio, A Ares, N Chrastina, D Isella, G Burkard, G Katsaros, G Dynamics of hole singlet-triplet qubits with large g-factor differences |
| title | Dynamics of hole singlet-triplet qubits with large g-factor differences |
| title_full | Dynamics of hole singlet-triplet qubits with large g-factor differences |
| title_fullStr | Dynamics of hole singlet-triplet qubits with large g-factor differences |
| title_full_unstemmed | Dynamics of hole singlet-triplet qubits with large g-factor differences |
| title_short | Dynamics of hole singlet-triplet qubits with large g-factor differences |
| title_sort | dynamics of hole singlet triplet qubits with large g factor differences |
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