Spontaneous Raman scattering out of a metastable atomic qubit
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arXiv
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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866916905884844032 |
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| author | Moore, I. D. Quinn, A. O'Reilly, J. Metzner, J. Brudney, S. Gregory, G. J. Wineland, D. J. Allcock, D. T. C. |
| author_facet | Moore, I. D. Quinn, A. O'Reilly, J. Metzner, J. Brudney, S. Gregory, G. J. Wineland, D. J. Allcock, D. T. C. |
| contents | Metastable qubits in atomic systems can enable large-scale quantum computing by simplifying hardware requirements and adding efficient erasure conversion to the pre-existing toolbox of high-fidelity laser-based control. For trapped atomic ions, the fundamental error floor of this control is given by spontaneous Raman and Rayleigh scattering from short-lived excited states. We measure spontaneous Raman scattering rates out of a metastable $D_{5/2}$ qubit manifold of a single trapped $^{40}$Ca$^+$ ion illuminated by 976 nm light that is -44 THz detuned from the dipole-allowed transition to the $P_{3/2}$ manifold. This supports the calculation of error rates from both types of scattering during one- and two-qubit gates on this platform, thus demonstrating that infidelities $<10^{-4}$ are possible. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_04854 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spontaneous Raman scattering out of a metastable atomic qubit Moore, I. D. Quinn, A. O'Reilly, J. Metzner, J. Brudney, S. Gregory, G. J. Wineland, D. J. Allcock, D. T. C. Quantum Physics Atomic Physics Metastable qubits in atomic systems can enable large-scale quantum computing by simplifying hardware requirements and adding efficient erasure conversion to the pre-existing toolbox of high-fidelity laser-based control. For trapped atomic ions, the fundamental error floor of this control is given by spontaneous Raman and Rayleigh scattering from short-lived excited states. We measure spontaneous Raman scattering rates out of a metastable $D_{5/2}$ qubit manifold of a single trapped $^{40}$Ca$^+$ ion illuminated by 976 nm light that is -44 THz detuned from the dipole-allowed transition to the $P_{3/2}$ manifold. This supports the calculation of error rates from both types of scattering during one- and two-qubit gates on this platform, thus demonstrating that infidelities $<10^{-4}$ are possible. |
| title | Spontaneous Raman scattering out of a metastable atomic qubit |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2505.04854 |