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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.05875 |
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| _version_ | 1866908757985853440 |
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| author | Rojas-Arias, Juan S. Noiri, Akito Yoneda, Jun Stano, Peter Nakajima, Takashi Takeda, Kenta Kobayashi, Takashi Scappucci, Giordano Tarucha, Seigo Loss, Daniel |
| author_facet | Rojas-Arias, Juan S. Noiri, Akito Yoneda, Jun Stano, Peter Nakajima, Takashi Takeda, Kenta Kobayashi, Takashi Scappucci, Giordano Tarucha, Seigo Loss, Daniel |
| contents | We investigate low-frequency noise in a spin-qubit device made in isotopically purified Si/Si-Ge. Observing sizable cross-correlations among energy fluctuations of different qubits, we conclude that these fluctuations are dominated by charge noise. At low frequencies, the noise spectra are not well described by a power law; instead, they reveal the presence of a few individual two-level fluctuators (TLFs). We demonstrate that the noise cross-correlations allow one to get information on the spatial location of such individual TLFs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_05875 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Inferring charge-noise source locations from correlations in spin qubits Rojas-Arias, Juan S. Noiri, Akito Yoneda, Jun Stano, Peter Nakajima, Takashi Takeda, Kenta Kobayashi, Takashi Scappucci, Giordano Tarucha, Seigo Loss, Daniel Mesoscale and Nanoscale Physics Quantum Physics We investigate low-frequency noise in a spin-qubit device made in isotopically purified Si/Si-Ge. Observing sizable cross-correlations among energy fluctuations of different qubits, we conclude that these fluctuations are dominated by charge noise. At low frequencies, the noise spectra are not well described by a power law; instead, they reveal the presence of a few individual two-level fluctuators (TLFs). We demonstrate that the noise cross-correlations allow one to get information on the spatial location of such individual TLFs. |
| title | Inferring charge-noise source locations from correlations in spin qubits |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2505.05875 |