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Quantum State Preparation Representation

Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations

arXiv
Authors: Martynas Skrabulis, Martin Colombano Sosa, Nicola Carlon Zambon, Andrei Militaru, Massimiliano Rossi, Martin Frimmer, Lukas Novotny

Year

2026

Paper ID

3271

Status

Preprint

Abstract Read

~2 min

Abstract Words

67

Citations

N/A

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 resolving single impulsive-force kicks as small as 6.9 keV/c, a value 0.6 dB below the sensor's zero-point value.

Why This Paper Matters

  • This paper contributes to the Quantum State Preparation & Representation research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • The sensitivity of a mechanical transducer is ultimately limited by its inherent quantum fluctuations.

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