Progress toward detection of individual TLS in nanomechanical resonators
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866911758273216512 |
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| author | Pedurand, Richard Golokolenov, Ilya Sillanpää, Mika de Lépinay, Laure Mercier Collin, Eddy Fefferman, Andrew |
| author_facet | Pedurand, Richard Golokolenov, Ilya Sillanpää, Mika de Lépinay, Laure Mercier Collin, Eddy Fefferman, Andrew |
| contents | The low temperature properties of amorphous solids are usually explained in terms of atomic-scale tunneling two level systems (TLS). For almost 20 years, individual TLS have been probed in insulating layers of superconducting quantum circuits. Detecting individual TLS in mechanical systems has been proposed but not definitively demonstrated. We describe an optomechanical system that is appropriate for this goal and describe our progress toward achieving it. In particular, we show that the expected coupling between the mechanical mode and a resonant TLS is strong enough for high visibility of a TLS given the linewidth of the mechanical mode. Furthermore, the electronic noise level of our measurement system is low enough and the anomalous force noise observed in other nanomechanical devices is absent. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_07327 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Progress toward detection of individual TLS in nanomechanical resonators Pedurand, Richard Golokolenov, Ilya Sillanpää, Mika de Lépinay, Laure Mercier Collin, Eddy Fefferman, Andrew Mesoscale and Nanoscale Physics The low temperature properties of amorphous solids are usually explained in terms of atomic-scale tunneling two level systems (TLS). For almost 20 years, individual TLS have been probed in insulating layers of superconducting quantum circuits. Detecting individual TLS in mechanical systems has been proposed but not definitively demonstrated. We describe an optomechanical system that is appropriate for this goal and describe our progress toward achieving it. In particular, we show that the expected coupling between the mechanical mode and a resonant TLS is strong enough for high visibility of a TLS given the linewidth of the mechanical mode. Furthermore, the electronic noise level of our measurement system is low enough and the anomalous force noise observed in other nanomechanical devices is absent. |
| title | Progress toward detection of individual TLS in nanomechanical resonators |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2401.07327 |