Fig. 3: Quantum non-Gaussianity after heralding without a cavity.
From: Heralded quantum non-Gaussian states in pulsed levitating optomechanics
The probability of finding n phonons in the mechanical mode conditioning on detecting photon at the output (a) versus initial mechanical occupation with ωτ = 1 and Γ/ωm = 0.008269. b Phonon probabilities as a function of the pulse duration assuming n0 = 0.1. Dashed, and solid lines correspond to a fixed heating rate \(\gamma \bar{n}=1{0}^{-1}{H}_{0}\) and \(\gamma \bar{n}={H}_{0}\) respectively, where H0 = 0.054ωm. The dashed gray line is the first-order absolute quantum non-Gaussianity threshold \({Q}_{1}^{G}\approx 0.48\) (Eq. (9)). States marked by the dots are further investigated in Figs. 6 and 5.
