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This is a Experimental Study study.

October 10, 2025Open Access

Enhancing Optomechanical Entanglement and Mechanical Squeezing by the Synergistic Effect of Quadratic Optomechanical Coupling and Coherent Feedback

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Analysis shows strong optomechanical entanglement and improved mechanical squeezing in systems, suggesting new methods for quantum technologies.

Optomechanical entanglement can be significantly enhanced with positive coupling and feedback control, pushing the limits of quantum mechanisms.
Demonstrated mechanical squeezing beyond the 3dB limit, achieving over 10dB squeezing degree with specific coupling conditions in experimental setups.
The study utilized a hybrid cavity optomechanical system that combines linear and quadratic couplings, leading to tunable system flexibility.
The findings may advance quantum information processing and explore new macroscopic quantum effects in optomechanical frameworks.

Jiao et al. (2025) studied this question.

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Analysis shows strong optomechanical entanglement and improved mechanical squeezing in systems, suggesting new methods for quantum technologies.