Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866917225138487296 |
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| author | Skrabulis, Martynas Sosa, Martin Colombano Zambon, Nicola Carlon Militaru, Andrei Rossi, Massimiliano Frimmer, Martin Novotny, Lukas |
| author_facet | Skrabulis, Martynas Sosa, Martin Colombano Zambon, Nicola Carlon Militaru, Andrei Rossi, Massimiliano Frimmer, Martin Novotny, Lukas |
| contents | The sensitivity of a mechanical transducer is ultimately limited by its inherent quantum fluctuations. Here, we use an optically levitated nanoparticle to measure impulsive forces smaller than the particle's zero-point momentum uncertainty. Our approach relies on reversibly squeezing the levitated particle's center-of-mass motion to coherently amplify the perturbation. We demonstrate resolving single impulsive-force kicks as small as 6.9 keV/c, a value 0.6 dB below the sensor's zero-point value. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_19392 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations Skrabulis, Martynas Sosa, Martin Colombano Zambon, Nicola Carlon Militaru, Andrei Rossi, Massimiliano Frimmer, Martin Novotny, Lukas Quantum Physics The sensitivity of a mechanical transducer is ultimately limited by its inherent quantum fluctuations. Here, we use an optically levitated nanoparticle to measure impulsive forces smaller than the particle's zero-point momentum uncertainty. Our approach relies on reversibly squeezing the levitated particle's center-of-mass motion to coherently amplify the perturbation. We demonstrate resolving single impulsive-force kicks as small as 6.9 keV/c, a value 0.6 dB below the sensor's zero-point value. |
| title | Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2601.19392 |