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arXiv · 2309.12532

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

Su Direkci·Klemens Winkler·Corentin Gut·Klemens Hammerer·Markus Aspelmeyer·Yanbei Chen
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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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Su Direkci, Klemens Winkler, Corentin Gut, Klemens Hammerer, Markus Aspelmeyer, Yanbei Chen. 2023-09-21. Macroscopic quantum entanglement between an optomechanical cavity and a continuous field in presence of non-Markovian noise. https://doi.org/10.1103/physrevresearch.6.013175

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