It is shown that the laser gravitational wave detector scheme proposed in [Barinov L. A., Khalili F. Ya. // Phys. Rev. D. 2025, https://doi.org/10.1103/7mn7-qm31], which combines the advantages of a quantum speedmeter and tunable optical rigidity, can be adapted for tabletop-scale optomechanical sensors of weak forces. A numerical analysis is performed, and analytical expressions are obtained for the spectral density of quantum noise under parameters typical for modern optomechanical systems with sub-gram-scale mirrors.
07.10.Cm Micromechanical devices and systems
42.50.Wk Mechanical effects of light on material media, microstructures and particles
03.65.Ta Foundations of quantum mechanics; measurement theory
$^1$\
$^2$Russian Quantum Center
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