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Force-Gradient Sensing and Entanglement via Feedback Cooling of Interacting Nanoparticles
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Force-Gradient Sensing and Entanglement via Feedback Cooling of Interacting Nanoparticles
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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
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Remote entanglement of massive oscillators via wire-mediated Coulomb interaction
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