Accuracy for superposition of squeezed states in lossless and dissipative channel

The analysis of accuracy for superposition of squeezed states (SSSs) in lossless and loss case has been performed in this study. In lossless case, time accuracies of SSSs with mean photon number n (s) have a scaling of n (s) (-2) in two limits of large and small squeezing. With the help of photon loss model, the dissipative channel will degrade accuracies has been proved. In the limit of large squeezing, the accuracy will slowly decrease with the reduction of transmittance eta. In the limit of small squeezing, time accuracy scales as 1/(eta (4) n (s) (2) ) and will decrease much faster along with eta decreases.