Figure - available from: Optics Letters
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$\mathcal {F}_{g}$ F g versus (a) $T$ T and (b) $\gamma _{\phi }$ γ ϕ for different $J$ J . Amplification factor $\chi$ χ versus (c) $T$ T and (d) $\gamma _{\phi }$ γ ϕ when $J/\omega _{\phi }=0.2$ J / ω ϕ = 0.2 .

$\mathcal {F}_{g}$ F g versus (a) $T$ T and (b) $\gamma _{\phi }$ γ ϕ for different $J$ J . Amplification factor $\chi$ χ versus (c) $T$ T and (d) $\gamma _{\phi }$ γ ϕ when $J/\omega _{\phi }=0.2$ J / ω ϕ = 0.2 .

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A scheme is proposed to achieve significantly enhanced quantum estimation of optorotational-coupling (ORC) strength by coupling a driven auxiliary cavity to a Laguerre–Gaussian (L–G) rotational cavity, where the ORC originates from the exchange of orbital angular momentum between a L–G light and rotational mirror. The results indicate that, by appr...