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arXiv · 2408.07492

Steady-state entanglement of interacting masses in free space through optimal feedback control

Klemens Winkler·Anton V. Zasedatelev·Benjamin A. Stickler·Uroš Delić·Andreas Deutschmann-Olek·Markus Aspelmeyer
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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.

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Klemens Winkler, Anton V. Zasedatelev, Benjamin A. Stickler, Uroš Delić, Andreas Deutschmann-Olek, Markus Aspelmeyer. 2024-08-14. Steady-state entanglement of interacting masses in free space through optimal feedback control. https://doi.org/10.1103/hxc8-fxcb

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