The Phase Sensitivities for Different Phase-Shift Configurations in an SU(1,1) Interferometer*

Fan Wang,Wei Zhong,Lan Zhou,Yu-Bo Sheng

Fig. 5 (Color online) Log-plots of the phase sensitivities $\Delta\theta^{{A}}$ and $\Delta\theta^{{Θ B}}$ for both two cases with homodyne measurement (blue line), Eqs. (12) and (16),as a function of $\theta$. The strength of two OPAs is $s=2$. The parameters of input state are as follows: $r=2.5$, $|\alpha|=\sinh r$.