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

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Hammerer,  Klemens
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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2309.12532.pdf
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PhysRevResearch.6.013175.pdf
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Citation

Direkci, S., Winkler, K., Gut, C., Hammerer, K., Aspelmeyer, M., & Chen, Y. (2024). Macroscopic quantum entanglement between an optomechanical cavity and a continuous field in presence of non-Markovian noise. Physical Review Research, 6(1): 013175. doi:10.1103/PhysRevResearch.6.013175.


Cite as: https://hdl.handle.net/21.11116/0000-000E-7D36-A
Abstract
Probing quantum entanglement with macroscopic objects allows 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 (Advanced LIGO) and discuss the parameter regimes where
entanglement exists, even in the presence of quantum and classical noises.