Macroscopic quantum entanglement between an optomechanical cavity and a continuous field in presence of non-Markovian noise

• URL: http://arxiv.org/abs/2309.12532v2
• Date: Tue, 5 Mar 2024 23:07:16 GMT
• Title: Macroscopic quantum entanglement between an optomechanical cavity and a continuous field in presence of non-Markovian noise
• Authors: Su Direkci, Klemens Winkler, Corentin Gut, Klemens Hammerer, Markus Aspelmeyer, Yanbei Chen
• Abstract summary: We develop a framework to quantify the amount of entanglement in the system numerically. We apply our framework to the case of the Advanced Laser Interferometer Gravitational-Wave Observatory.
• Score: 10.363406065066538
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Probing quantum entanglement with macroscopic objects allows us to test quantum mechanics in new regimes. One way to realize such behavior is to couple a macroscopic mechanical oscillator to a continuous light field via radiation pressure. In view of this, the system that is discussed comprises an optomechanical cavity driven by a coherent optical field in the unresolved sideband regime where we assume Gaussian states and dynamics. We develop a framework to quantify the amount of entanglement in the system numerically. Different from previous work, we treat non-Markovian noise and take into account both the continuous optical field and the cavity mode. We apply our framework to the case of the Advanced Laser Interferometer Gravitational-Wave Observatory and discuss the parameter regimes where entanglement exists, even in the presence of quantum and classical noises.

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