Correction to: Scientific Reports https://doi.org/10.1038/s41598-018-22666-2, published online 14 March 2018

In Figure 1, the schematic diagram is incorrect. The correct Figure 1 appears below as Figure 1.

Figure 1
figure 1

(a) A schematic diagram for a three-level system with Λ-type transitions inside the cavity. Here two green curves schematically represent the cavity field. (b) The schematic diagram for three-level system coupled to a single-mode cavity field and a classical probe field. The cavity field induces the transition between the energy levels |e〉 and |f〉, however the probe field induces the transition between the energy levels |e〉 and |g〉. Here, Δ = ωeωp is the detuning between the frequency ωp of the probe field and the transition frequency ωe of the three-level system, δ = ωc − (ωeωf) denotes the detuning between the frequency ωc of the cavity field and the transition frequency ωeωf of the three-level system. (c) A schematic diagram for the energy levels of the cavity field with the equal energy levels spacing ωc.