Quantum logic operations and algorithms in a single 25-level atomic qudit
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866909733194039296 |
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| author | Low, Pei Jiang Zutt, Nicholas C. F. Tathed, Gaurav A. Senko, Crystal |
| author_facet | Low, Pei Jiang Zutt, Nicholas C. F. Tathed, Gaurav A. Senko, Crystal |
| contents | Scaling quantum computers remains a substantial scientific and technological challenge. Leveraging the full range of intrinsic degrees of freedom in quantum systems offers a promising route towards enhanced algorithmic performance and hardware efficiency. We experimentally study the use of $^{137}$Ba$^+$ ions for quantum information processing, achieving high-fidelity state preparation and readout of up to 25 internal levels, thus forming a 25-dimensional qudit. By probing superpositions of up to 24 states, we investigate how errors scale with qudit dimension $d$ and identify the primary error sources affecting quantum coherence. Additionally, we demonstrate high-dimensional qudit operations by implementing a 3-qubit Bernstein-Vazirani algorithm and a 4-qubit Toffoli gate with a single ion. Our findings suggest that quantum computing architectures based on large-dimensional qudits hold significant promise. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_15799 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum logic operations and algorithms in a single 25-level atomic qudit Low, Pei Jiang Zutt, Nicholas C. F. Tathed, Gaurav A. Senko, Crystal Quantum Physics Scaling quantum computers remains a substantial scientific and technological challenge. Leveraging the full range of intrinsic degrees of freedom in quantum systems offers a promising route towards enhanced algorithmic performance and hardware efficiency. We experimentally study the use of $^{137}$Ba$^+$ ions for quantum information processing, achieving high-fidelity state preparation and readout of up to 25 internal levels, thus forming a 25-dimensional qudit. By probing superpositions of up to 24 states, we investigate how errors scale with qudit dimension $d$ and identify the primary error sources affecting quantum coherence. Additionally, we demonstrate high-dimensional qudit operations by implementing a 3-qubit Bernstein-Vazirani algorithm and a 4-qubit Toffoli gate with a single ion. Our findings suggest that quantum computing architectures based on large-dimensional qudits hold significant promise. |
| title | Quantum logic operations and algorithms in a single 25-level atomic qudit |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.15799 |