Measurement and feed-forward correction of the fast phase noise of lasers
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915259334262784 |
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| author | Denecker, Tom Chew, Yukii Torii Guillemant, Oscar Watanabe, Genki Tomita, Takufumi Ohmori, Kenji de Léséleuc, Sylvain |
| author_facet | Denecker, Tom Chew, Yukii Torii Guillemant, Oscar Watanabe, Genki Tomita, Takufumi Ohmori, Kenji de Léséleuc, Sylvain |
| contents | Lasers are the workhorse of quantum engineering in the atomic-molecular-optic community. However, phase noise of the laser, which can be especially large in popular semiconductor-based lasers, can limit fidelity of operation. Here, we present a fully-fiberized instrument detecting and correcting the fast, sub-microsecond, phase fluctuations of lasers. We demonstrate a measurement noise floor of less than 0.1 Hz$^{2}$/Hz, and a noise suppression of more than 20 dB for Fourier frequencies in the 1 to 10 MHz region (reaching up to 30 dB at 3 MHz), where noise is critical for Rydberg-based quantum gates. Finally, we observe the improvement offered by this fast phase noise eater on a Raman transition driven by two such stabilized lasers. These measurement and correction techniques are important tools for high-fidelity manipulation of the excited electronic states of atoms and molecules. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_10021 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measurement and feed-forward correction of the fast phase noise of lasers Denecker, Tom Chew, Yukii Torii Guillemant, Oscar Watanabe, Genki Tomita, Takufumi Ohmori, Kenji de Léséleuc, Sylvain Atomic Physics Optics Quantum Physics Lasers are the workhorse of quantum engineering in the atomic-molecular-optic community. However, phase noise of the laser, which can be especially large in popular semiconductor-based lasers, can limit fidelity of operation. Here, we present a fully-fiberized instrument detecting and correcting the fast, sub-microsecond, phase fluctuations of lasers. We demonstrate a measurement noise floor of less than 0.1 Hz$^{2}$/Hz, and a noise suppression of more than 20 dB for Fourier frequencies in the 1 to 10 MHz region (reaching up to 30 dB at 3 MHz), where noise is critical for Rydberg-based quantum gates. Finally, we observe the improvement offered by this fast phase noise eater on a Raman transition driven by two such stabilized lasers. These measurement and correction techniques are important tools for high-fidelity manipulation of the excited electronic states of atoms and molecules. |
| title | Measurement and feed-forward correction of the fast phase noise of lasers |
| topic | Atomic Physics Optics Quantum Physics |
| url | https://arxiv.org/abs/2411.10021 |