Efficient control of fluxonium qubits via nonadiabatic transitions
The fluxonium qubit is a promising platform for quantum operations due to its large anharmonicity and long coherence time. However, conventional resonant driving methods often require long operation times and complex implementation. As an alternative, nonadiabatic transitions induced by a time-depen...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2025-08-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/4s4k-rf6x |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849228893194551296 |
|---|---|
| author | I-Yun Hsiao Yen-Hsiang Lin Yoshiaki Teranishi |
| author_facet | I-Yun Hsiao Yen-Hsiang Lin Yoshiaki Teranishi |
| author_sort | I-Yun Hsiao |
| collection | DOAJ |
| description | The fluxonium qubit is a promising platform for quantum operations due to its large anharmonicity and long coherence time. However, conventional resonant driving methods often require long operation times and complex implementation. As an alternative, nonadiabatic transitions induced by a time-dependent external flux ϕ_{ext}(t) can enable faster and simpler control by exploiting quantum interference between multiple transition paths. Existing approaches typically impose periodicity or symmetry on ϕ_{ext}(t), which can limit control efficiency. We propose a design strategy for ϕ_{ext}(t) that relaxes these constraints. We demonstrate the effectiveness of this approach in two key scenarios: population inversion and adiabatic passage. Numerical simulations show that our method achieves higher control efficiency than existing schemes, emphasizing the advantage of breaking periodicity and symmetry. Furthermore, by incorporating decoherence effects using the Lindblad master equation, we confirm that the proposed scheme remains robust under realistic conditions. |
| format | Article |
| id | doaj-art-b2b0a508855c451c81bf37c86c63c5d2 |
| institution | Kabale University |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-b2b0a508855c451c81bf37c86c63c5d22025-08-22T14:32:35ZengAmerican Physical SocietyPhysical Review Research2643-15642025-08-017303318310.1103/4s4k-rf6xEfficient control of fluxonium qubits via nonadiabatic transitionsI-Yun HsiaoYen-Hsiang LinYoshiaki TeranishiThe fluxonium qubit is a promising platform for quantum operations due to its large anharmonicity and long coherence time. However, conventional resonant driving methods often require long operation times and complex implementation. As an alternative, nonadiabatic transitions induced by a time-dependent external flux ϕ_{ext}(t) can enable faster and simpler control by exploiting quantum interference between multiple transition paths. Existing approaches typically impose periodicity or symmetry on ϕ_{ext}(t), which can limit control efficiency. We propose a design strategy for ϕ_{ext}(t) that relaxes these constraints. We demonstrate the effectiveness of this approach in two key scenarios: population inversion and adiabatic passage. Numerical simulations show that our method achieves higher control efficiency than existing schemes, emphasizing the advantage of breaking periodicity and symmetry. Furthermore, by incorporating decoherence effects using the Lindblad master equation, we confirm that the proposed scheme remains robust under realistic conditions.http://doi.org/10.1103/4s4k-rf6x |
| spellingShingle | I-Yun Hsiao Yen-Hsiang Lin Yoshiaki Teranishi Efficient control of fluxonium qubits via nonadiabatic transitions Physical Review Research |
| title | Efficient control of fluxonium qubits via nonadiabatic transitions |
| title_full | Efficient control of fluxonium qubits via nonadiabatic transitions |
| title_fullStr | Efficient control of fluxonium qubits via nonadiabatic transitions |
| title_full_unstemmed | Efficient control of fluxonium qubits via nonadiabatic transitions |
| title_short | Efficient control of fluxonium qubits via nonadiabatic transitions |
| title_sort | efficient control of fluxonium qubits via nonadiabatic transitions |
| url | http://doi.org/10.1103/4s4k-rf6x |
| work_keys_str_mv | AT iyunhsiao efficientcontroloffluxoniumqubitsvianonadiabatictransitions AT yenhsianglin efficientcontroloffluxoniumqubitsvianonadiabatictransitions AT yoshiakiteranishi efficientcontroloffluxoniumqubitsvianonadiabatictransitions |