Fig. 5: Robustness of quantum photonic state generation and correlated emitter states.

a Fidelity of the emitted Schrodinger cat state in the most occupied temporal mode as a function of driving strength and unwanted decay rate. Strong driving brings the emitter into its nonlinear regime producing multiple temporal modes which hinders the fidelity of the cat state. Unwanted decays effectively measure the state of the emitter reducing the fidelity as well. The Wigner functions of generated photonic states are plotted as insets. b Probability for a number of emitters to finish in the state \(\left\vert 1\right\rangle\) as a function of the unwanted decay rate. Large unwanted decays measure if the emitters are in the state \(\left\vert 0\right\rangle\) or \(\left\vert 1\right\rangle\) reducing the distribution to a binomial distribution as in the case of a classical detector.