Steady-state entanglement of interacting masses in free space through optimal feedback control
Quantum Physics
2026-03-17 v3
Abstract
We develop a feedback strategy based on optimal quantum feedback control for Gaussian systems to maximise the likelihood of steady-state entanglement detection between two directly interacting masses. We employ linear quadratic Gaussian (LQG) control to engineer the phase space dynamics of the two masses and propose Einstein-Podolsky-Rosen (EPR)-type variance minimisation constraints for the feedback to facilitate unconditional entanglement generation. This scheme allows for stationary entanglement in parameter regimes where strategies based on total energy minimisation cooling would fail.
Keywords
Cite
@article{arxiv.2408.07492,
title = {Steady-state entanglement of interacting masses in free space through optimal feedback control},
author = {Klemens Winkler and Anton V. Zasedatelev and Benjamin A. Stickler and Uroš Delić and Andreas Deutschmann-Olek and Markus Aspelmeyer},
journal= {arXiv preprint arXiv:2408.07492},
year = {2026}
}