Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot device
Abstract Spin exchange between confined holes and nuclei has been demonstrated for zero-dimensional quantum dots by optical techniques but has not been observed for gated planar structures. Here, enabled by strong spin-orbit interaction, and under microwave (MW) illumination, we report hyperfine int...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-08-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-025-01075-0 |
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| author | Sergei Studenikin Jordan Ducatel Olivia Ellis Marek Korkusinski Alex Bogan Piotr Zawadzki D. Guy Austing Andrew Sachrajda |
| author_facet | Sergei Studenikin Jordan Ducatel Olivia Ellis Marek Korkusinski Alex Bogan Piotr Zawadzki D. Guy Austing Andrew Sachrajda |
| author_sort | Sergei Studenikin |
| collection | DOAJ |
| description | Abstract Spin exchange between confined holes and nuclei has been demonstrated for zero-dimensional quantum dots by optical techniques but has not been observed for gated planar structures. Here, enabled by strong spin-orbit interaction, and under microwave (MW) illumination, we report hyperfine interaction and dynamic polarization of the nuclei with confined heavy-holes in a GaAs/AlGaAs double quantum dot device. Distinct signatures of the resultant hyperfine field on the electron dipole spin resonance (EDSR) signal include: hysteresis on sweeping the magnetic (B-) field up and down with characteristics that are strongly dependent on both MW power and B-field sweep rate; free bidirectional dragging of the EDSR condition; stable locking on resonance on a timescale of hours; slow temporal change as the hyperfine field decays (T1 nuclear decay time ~ 100 s); and oscillations in time commensurate with Larmor precession of the 75As nuclei. We attain pumped nuclear (Overhauser) fields ~ 25 mT (~20% nuclear polarization). |
| format | Article |
| id | doaj-art-ae8c3560a92d42aa8bcd78447029da71 |
| institution | Kabale University |
| issn | 2056-6387 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj-art-ae8c3560a92d42aa8bcd78447029da712025-08-20T04:03:07ZengNature Portfolionpj Quantum Information2056-63872025-08-0111111010.1038/s41534-025-01075-0Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot deviceSergei Studenikin0Jordan Ducatel1Olivia Ellis2Marek Korkusinski3Alex Bogan4Piotr Zawadzki5D. Guy Austing6Andrew Sachrajda7Emerging Technologies Division, National Research Council of CanadaEmerging Technologies Division, National Research Council of CanadaEmerging Technologies Division, National Research Council of CanadaEmerging Technologies Division, National Research Council of CanadaEmerging Technologies Division, National Research Council of CanadaEmerging Technologies Division, National Research Council of CanadaEmerging Technologies Division, National Research Council of CanadaEmerging Technologies Division, National Research Council of CanadaAbstract Spin exchange between confined holes and nuclei has been demonstrated for zero-dimensional quantum dots by optical techniques but has not been observed for gated planar structures. Here, enabled by strong spin-orbit interaction, and under microwave (MW) illumination, we report hyperfine interaction and dynamic polarization of the nuclei with confined heavy-holes in a GaAs/AlGaAs double quantum dot device. Distinct signatures of the resultant hyperfine field on the electron dipole spin resonance (EDSR) signal include: hysteresis on sweeping the magnetic (B-) field up and down with characteristics that are strongly dependent on both MW power and B-field sweep rate; free bidirectional dragging of the EDSR condition; stable locking on resonance on a timescale of hours; slow temporal change as the hyperfine field decays (T1 nuclear decay time ~ 100 s); and oscillations in time commensurate with Larmor precession of the 75As nuclei. We attain pumped nuclear (Overhauser) fields ~ 25 mT (~20% nuclear polarization).https://doi.org/10.1038/s41534-025-01075-0 |
| spellingShingle | Sergei Studenikin Jordan Ducatel Olivia Ellis Marek Korkusinski Alex Bogan Piotr Zawadzki D. Guy Austing Andrew Sachrajda Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot device npj Quantum Information |
| title | Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot device |
| title_full | Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot device |
| title_fullStr | Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot device |
| title_full_unstemmed | Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot device |
| title_short | Bidirectional nuclear polarization through electric dipole spin resonance enabled by spin-orbit interaction in a single hole planar quantum dot device |
| title_sort | bidirectional nuclear polarization through electric dipole spin resonance enabled by spin orbit interaction in a single hole planar quantum dot device |
| url | https://doi.org/10.1038/s41534-025-01075-0 |
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