Quantum limited imaging of a nanomechanical resonator with a spatial mode sorter
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866918132280459264 |
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| author | Choi, Morgan Pluchar, Christian He, Wenhua Guha, Saikat Wilson, Dalziel |
| author_facet | Choi, Morgan Pluchar, Christian He, Wenhua Guha, Saikat Wilson, Dalziel |
| contents | We explore the use of a spatial mode sorter to image a nanomechanical resonator, with the goal of studying the quantum limits of active imaging and extending the toolbox for optomechanical force sensing. In our experiment, we reflect a Gaussian laser beam from a vibrating nanoribbon and pass the reflected beam through a commercial spatial mode demultiplexer (Cailabs Proteus). The intensity in each demultiplexed channel depends on the mechanical mode shapes and encodes information about their displacement amplitudes. As a concrete demonstration, we monitor the angular displacement of the ribbon's fundamental torsion mode by illuminating in the fundamental Hermite-Gauss mode (HG$_{00}$) and reading out in the HG$_{01}$ mode. We show that this technique permits readout of the ribbon's torsional vibration with a precision near the quantum limit. Our results highlight new opportunities at the interface of quantum imaging and quantum optomechanics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_04980 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum limited imaging of a nanomechanical resonator with a spatial mode sorter Choi, Morgan Pluchar, Christian He, Wenhua Guha, Saikat Wilson, Dalziel Quantum Physics Mesoscale and Nanoscale Physics Applied Physics Optics We explore the use of a spatial mode sorter to image a nanomechanical resonator, with the goal of studying the quantum limits of active imaging and extending the toolbox for optomechanical force sensing. In our experiment, we reflect a Gaussian laser beam from a vibrating nanoribbon and pass the reflected beam through a commercial spatial mode demultiplexer (Cailabs Proteus). The intensity in each demultiplexed channel depends on the mechanical mode shapes and encodes information about their displacement amplitudes. As a concrete demonstration, we monitor the angular displacement of the ribbon's fundamental torsion mode by illuminating in the fundamental Hermite-Gauss mode (HG$_{00}$) and reading out in the HG$_{01}$ mode. We show that this technique permits readout of the ribbon's torsional vibration with a precision near the quantum limit. Our results highlight new opportunities at the interface of quantum imaging and quantum optomechanics. |
| title | Quantum limited imaging of a nanomechanical resonator with a spatial mode sorter |
| topic | Quantum Physics Mesoscale and Nanoscale Physics Applied Physics Optics |
| url | https://arxiv.org/abs/2411.04980 |