Optical spin locking of a solid-state qubit
| Autor: | Edmund Clarke, Emil Vosmar Denning, Gabriel Ethier-Majcher, Robert Stockill, Mete Atatüre, Dorian Gangloff, Maxime Hugues, C. Le Gall, J. H. Bodey, Daniel M. Jackson |
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| Přispěvatelé: | Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Bodey, JH [0000-0002-4067-1613], Gangloff, DA [0000-0002-7100-0847], Jackson, DM [0000-0003-2001-6619], Clarke, E [0000-0002-8287-0282], Apollo - University of Cambridge Repository, Bodey, J. H. [0000-0002-4067-1613], Gangloff, D. A. [0000-0002-7100-0847], Jackson, D. M. [0000-0003-2001-6619], Clarke, E. [0000-0002-8287-0282] |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Computer Networks and Communications
FOS: Physical sciences 02 engineering and technology Computer Science::Digital Libraries 01 natural sciences lcsh:QA75.5-76.95 law.invention Spin magnetic moment quant-ph law Quantum state Quantum mechanics 639/766/483/2802 cond-mat.mes-hall Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Computer Science (miscellaneous) 010306 general physics Electron paramagnetic resonance Spin (physics) ComputingMilieux_MISCELLANEOUS [PHYS]Physics [physics] Physics Quantum Physics Mesoscopic physics Condensed Matter - Mesoscale and Nanoscale Physics article Resonance Statistical and Nonlinear Physics 021001 nanoscience & nanotechnology lcsh:QC1-999 639/766/400/482 Computational Theory and Mathematics Qubit Computer Science::Mathematical Software lcsh:Electronic computers. Computer science Quantum Physics (quant-ph) 0210 nano-technology lcsh:Physics 639/301/119/1000/1017 Coherence (physics) |
| Zdroj: | npj Quantum Information, Vol 5, Iss 1, Pp 1-6 (2019) Bodey, J H, Stockill, R, Denning, E V, Gangloff, D A, Éthier-Majcher, G, Jackson, D M, Clarke, E, Hugues, M, Gall, C L & Atatüre, M 2019, ' Optical spin locking of a solid-state qubit ', npj Quantum Information, vol. 5, no. 1, 95 . https://doi.org/10.1038/s41534-019-0206-3 npj Quantum Information npj Quantum Information, Nature, 2019, 5 (1), ⟨10.1038/s41534-019-0206-3⟩ |
| ISSN: | 2056-6387 |
| Popis: | Quantum control of solid-state spin qubits typically involves pulses in the microwave domain, drawing from the well-developed toolbox of magnetic resonance spectroscopy. Driving a solid-state spin by optical means offers a high-speed alternative, which in the presence of limited spin coherence makes it the preferred approach for high-fidelity quantum control. Bringing the full versatility of magnetic spin resonance to the optical domain requires full phase and amplitude control of the optical fields. Here, we imprint a programmable microwave sequence onto a laser field and perform electron spin resonance in a semiconductor quantum dot via a two-photon Raman process. We show that this approach yields full SU(2) spin control with over 98% pi-rotation fidelity. We then demonstrate its versatility by implementing a particular multi-axis control sequence, known as spin locking. Combined with electron-nuclear Hartmann-Hahn resonances which we also report in this work, this sequence will enable efficient coherent transfer of a quantum state from the electron spin to the mesoscopic nuclear ensemble. Comment: 11 pages, 10 figures |
| Databáze: | OpenAIRE |
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