@article{22244,
  abstract     = {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 an impulsive-force resolution as small as 6.9  keV/c, a value 0.6 dB below the sensor’s zero-point value.},
  author       = {Skrabulis, Martynas and Sosa, Martin Colombano and Zambon, Nicola Carlon and Militaru, Andrei and Rossi, Massimiliano and Frimmer, Martin and Novotny, Lukas},
  issn         = {1079-7114},
  journal      = {Physical Review Letters},
  number       = {23},
  publisher    = {American Physical Society},
  title        = {{Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations}},
  doi          = {10.1103/9wzm-3qyb},
  volume       = {136},
  year         = {2026},
}