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Force-Gradient Sensing and Entanglement via Feedback Cooling of Interacting Nanoparticles

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arxiv 2204.13684 v3 pith:S66POYIY submitted 2022-04-28 quant-ph

Force-Gradient Sensing and Entanglement via Feedback Cooling of Interacting Nanoparticles

classification quant-ph
keywords entanglementsensingfeedbackforce-gradientinteractingnanoparticlesparticlesstationary
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show theoretically that feedback-cooling of two levitated, interacting nanoparticles enables differential sensing of forces and the observation of stationary entanglement. The feedback drives the two particles into a stationary, non-thermal state which is susceptible to inhomogeneous force fields and which exhibits entanglement for sufficiently strong inter-particle couplings. We predict that force-gradient sensing at the zepto-Newton per micron range is feasible and that entanglement due to the Coulomb interaction between charged particles can be realistically observed in state-of-the-art setups.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Remote entanglement of massive oscillators via wire-mediated Coulomb interaction

    quant-ph 2026-07 conditional novelty 7.0

    A conducting wire changes the Coulomb coupling between two charged oscillators from a 1/D³ to a 1/(D ln²D) decay, enabling steady-state motional entanglement at separations up to ~1 mm.