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. 2015 Apr 27;6:6981. doi: 10.1038/ncomms7981

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(a) The total (tot) mechanical linewidth as a function of cavity photon number. Red circles: V_g=6.5 V, g₀/2π≃0.7 MHz. Black circles: V_g=9.5 V yielding higher g₀/2π≃1.0 MHz. Squares: smaller g₀/2π≃0.5 MHz obtained with V_g=4.6 V. The solid lines are expectations from the basic linear model, that is . The dashed lines include the qubit-induced extra linewidth, . (b) Zoom-in of the linear regime of a. In all the data, Δ≃−1, Φ/Φ₀≃0.39.

Inline graphic — (a) The total (tot) mechanical linewidth as a function of cavity photon number. Red circles: V_g=6.5 V, g₀/2π≃0.7 MHz. Black circles: V_g=9.5 V yielding higher g₀/2π≃1.0 MHz. Squares: smaller g₀/2π≃0.5 MHz obtained with V_g=4.6 V. The solid lines are expectations from the basic linear model, that is . The dashed lines include the qubit-induced extra linewidth, . (b) Zoom-in of the linear regime of a. In all the data, Δ≃−1, Φ/Φ₀≃0.39.