Sensor Sensitivity based on exceptional points in Brillouin optomechanical system
DOI:
https://doi.org/10.22399/ijcesen.4022Keywords:
Sensing, Exceptional points, Synthetic magnetism, Brillouin scatteringAbstract
We propose a mass sensor based on exceptional points (EPs) engineered under synthetic magnetism in a Brillouin optomechanical system. This scheme consists of two optical modes and two mechanically coupled resonators. One mechanical resonator is subject to Backward Stimulated Brillouin Scattering (BSBS), which is critical for inducing an additional EP. We show that our system hosts two distinct EPs, the first is induced by the BSBS phenomenon while the second is common to optomechanical system under synthetic magnetism. Any perturbation to the system, such as a change in frequency, leads to a significant enhancement of sensitivity at both EPs. We find that the EP induced by the BSBS phenomenon provides an even greater sensitivity enhancement. Our proposal is a significant advancement over systems with a single EP, as it provides two distinct points of enhanced sensitivity, offering a broader operational range and improved performance. This work paves the way for more precise quantum measurements and quantum detection.
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