Quantum sensing of a coherent single spin excitation in a nuclear ensemble
| Autor: | Mete Atatüre, Leon Zaporski, Maxime Hugues, Daniel M. Jackson, C. Le Gall, Clara Bachorz, Edmund Clarke, Dorian Gangloff, J. H. Bodey |
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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) |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS]Physics [physics]
Physics Quantum Physics Quantum decoherence Rabi cycle Condensed Matter - Mesoscale and Nanoscale Physics Magnon Quantum sensor General Physics and Astronomy Macroscopic quantum phenomena FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas Quantum state Quantum mechanics Qubit 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Condensed Matter::Strongly Correlated Electrons 010306 general physics Spin (physics) Quantum Physics (quant-ph) ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Nature Physics Nature Physics, Nature Publishing Group, 2021, 17 (5), pp.585-590. ⟨10.1038/s41567-020-01161-4⟩ |
| ISSN: | 1745-2473 1476-4636 |
| DOI: | 10.48550/arxiv.2008.09541 |
| Popis: | Accessing an ensemble of coherently interacting objects at the level of single quanta via a proxy qubit is transformative in the investigations of emergent quantum phenomena. An isolated nuclear spin ensemble is a remarkable platform owing to its coherence, but sensing its excitations with single spin precision has remained elusive. Here we achieve quantum sensing of a single nuclear-spin excitation (a nuclear magnon) in a dense ensemble of approximately 80,000 nuclei. A Ramsey measurement on the electron proxy qubit enables us to sense the hyperfine shift induced by a single nuclear magnon. We resolve multiple magnon modes distinguished by atomic species and spin polarity via the spectral dependence of this hyperfine shift. Finally, we observe the time-dependent shift induced by collective Rabi oscillations, revealing the competition between the buildup of quantum correlations and decoherence in the ensemble. These techniques could be extended to probe the engineered quantum states of the ensemble such as long-lived memory states. A single excitation in a semiconductor nuclear spin ensemble is detected with parts-per-million accuracy using the coupling between the ensemble and an electron-spin quantum dot. |
| Databáze: | OpenAIRE |
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