Fig. 4: Quantum cooperativity and equivalent input added noise.
From: Quantum-enabled operation of a microwave-optical interface
a Inferred quantum cooperativity Cq = C/Ne for the measured output noise values shown in Fig. 3c. b, c Inferred optics-to-microwave \({N}_{{{{{{{{\rm{in}}}}}}}}}^{eo}\) (microwave-to-optics \({N}_{{{{{{{{\rm{in}}}}}}}}}^{oe}\)) equivalent added input noise as a function of C and Ne for \({{{{{{{\mathcal{S}}}}}}}}=0.22\). Crosses mark the lowest five blue measurement points in Fig. 3c.
