Journal
PHYSICAL REVIEW LETTERS
Volume 121, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.121.063602
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Funding
- ERC-QMES [338763]
- Swiss National Centre of Competence in Research (NCCR)-Quantum Science and Technology (QSIT) program [51NF40-160591]
- Swiss National Science Foundation (SNF) [51NF40-160591] Funding Source: Swiss National Science Foundation (SNF)
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Miniaturized mechanical sensors rely on resonant operation schemes, unsuited to detect static forces. We demonstrate a nanomechanical sensor for static forces based on an optically trapped nanoparticle in vacuum. Our technique relies on an off-resonant interaction of the particle with a weak static force, and a resonant readout of the displacement caused by this interaction. We demonstrate a sensitivity of 10 aN to static gravitational and electric forces. Our work provides a tool for the closer investigation of short-range forces, and marks an important step towards the realization of matter-wave interferometry with macroscopic objects.
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