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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.12866 |
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| _version_ | 1866918498614116352 |
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| author | Lötstedt, Erik Yamanouchi, Kaoru |
| author_facet | Lötstedt, Erik Yamanouchi, Kaoru |
| contents | We investigate the quantum computing of the vibrational dynamics of CO$_2$ and H$_2$O by constructing the vibrational Hamiltonian in qubit and qudit form by two types of qubit encodings (binary and direct) and a qudit encoding. We simulate the time-dependent vibrational population transfer using the three different encodings, including the effect of noise and find that the qudit encoding leads to the most accurate results both for CO$_2$ and H$_2$O because of the small number of terms in the qudit Hamiltonian as long as the same values of the entangling gate error rates are adopted. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_12866 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Simulation of vibrational dynamics using qubits and qudits Lötstedt, Erik Yamanouchi, Kaoru Quantum Physics We investigate the quantum computing of the vibrational dynamics of CO$_2$ and H$_2$O by constructing the vibrational Hamiltonian in qubit and qudit form by two types of qubit encodings (binary and direct) and a qudit encoding. We simulate the time-dependent vibrational population transfer using the three different encodings, including the effect of noise and find that the qudit encoding leads to the most accurate results both for CO$_2$ and H$_2$O because of the small number of terms in the qudit Hamiltonian as long as the same values of the entangling gate error rates are adopted. |
| title | Simulation of vibrational dynamics using qubits and qudits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2605.12866 |