Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit
The realization of effective quantum error correction protocols remains a central challenge in the development of scalable quantum computers. Employing high-dimensional quantum systems (qudits) can offer more hardware-efficient protocols than qubit-based approaches. Using electron-nuclear double res...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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American Physical Society
2025
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| _version_ | 1824458846912905216 |
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| author | Lim, S Vaganov, M Liu, J Ardavan, A |
| author_facet | Lim, S Vaganov, M Liu, J Ardavan, A |
| author_sort | Lim, S |
| collection | OXFORD |
| description | The realization of effective quantum error correction protocols remains a central challenge in the development of scalable quantum computers. Employing high-dimensional quantum systems (qudits) can offer more hardware-efficient protocols than qubit-based approaches. Using electron-nuclear double resonance, we implement a logical qubit encoded on the four states of a I = 3/2 nuclear spin hyperfine-coupled to a S = 1/2 electron spin qubit; the encoding protects against the dominant decoherence mechanism in such systems, fluctuations of the quantizing magnetic field. We explore the dynamics of the encoded state both under a controlled application of the fluctuation and under natural decoherence processes. Our results confirm the potential of these proposals for practical, implementable, fault tolerant quantum memories. |
| first_indexed | 2025-02-19T04:32:23Z |
| format | Journal article |
| id | oxford-uuid:e9c57b03-a643-4331-bc1f-199e3273a891 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2025-02-19T04:32:23Z |
| publishDate | 2025 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:e9c57b03-a643-4331-bc1f-199e3273a8912025-01-09T16:59:54ZDemonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin quditJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e9c57b03-a643-4331-bc1f-199e3273a891EnglishSymplectic ElementsAmerican Physical Society2025Lim, SVaganov, MLiu, JArdavan, AThe realization of effective quantum error correction protocols remains a central challenge in the development of scalable quantum computers. Employing high-dimensional quantum systems (qudits) can offer more hardware-efficient protocols than qubit-based approaches. Using electron-nuclear double resonance, we implement a logical qubit encoded on the four states of a I = 3/2 nuclear spin hyperfine-coupled to a S = 1/2 electron spin qubit; the encoding protects against the dominant decoherence mechanism in such systems, fluctuations of the quantizing magnetic field. We explore the dynamics of the encoded state both under a controlled application of the fluctuation and under natural decoherence processes. Our results confirm the potential of these proposals for practical, implementable, fault tolerant quantum memories. |
| spellingShingle | Lim, S Vaganov, M Liu, J Ardavan, A Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit |
| title | Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit |
| title_full | Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit |
| title_fullStr | Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit |
| title_full_unstemmed | Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit |
| title_short | Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit |
| title_sort | demonstrating experimentally the encoding and dynamics of an error correctable logical qubit on a hyperfine coupled nuclear spin qudit |
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