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

• URL: http://arxiv.org/abs/2408.07492v1
• Date: Wed, 14 Aug 2024 12:14:58 GMT
• Title: Steady-state entanglement of interacting masses in free space through optimal feedback control
• Authors: Klemens Winkler, Anton V. Zasedatelev, Benjamin A. Stickler, Uroš Delić, Andreas Deutschmann-Olek, Markus Aspelmeyer,
• Abstract summary: We employ linear quadratic Gaussian (LQG) control to engineer the phase space dynamics of the two masses. We propose Einstein-Podolsky-Rosen (EPR)-type variance minimisation constraints for the feedback to facilitate unconditional entanglement generation.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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. This feedback strategy, applied to the system of two masses driven out-of-thermal equilibrium [arXiv:2408.06251] enables unconditional entanglement generation under realistic experimental conditions.

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