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Quantum Entropy Information Measures

A levitated nano-accelerometer sensitized by quantum quench

arXiv
Authors: M. Kamba, S. Otabe, K. Funo, T. Sagawa, K. Aikawa

Year

2026

Paper ID

3169

Status

Preprint

Abstract Read

~2 min

Abstract Words

94

Citations

N/A

Abstract

We realize a nanoscale accelerometer exploiting the nonequilibrium dynamics of a nanoparticle near the quantum ground state. We explore the dynamics after quenching the trapping potential and find that rapid quenching provides an instance at which the sensitivity is enhanced due to the minimized uncertainty in the position. With rapid quenching, the observed sensitivity is in good agreement with a numerical simulation based on the quantum Langevin equation and approaches to the limit given by the quantum Fisher information. Our results open up a pathway to quantum inertial sensing sensitized by exploiting quench dynamics.

Why This Paper Matters

  • This paper contributes to the Quantum Entropy & Information Measures research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • We realize a nanoscale accelerometer exploiting the nonequilibrium dynamics of a nanoparticle near the quantum ground state.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2601.21119 [2] arXiv https://arxiv.org/abs/2601.21119 [3] Publisher https://arxiv.org/abs/2601.21119

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