Delooping derived mapping spaces of bimodules over an operad

From a map of operads $eta : Orightarrow O$, we introduce a cofibrant replacement of the operad $O$ in the category of bimodules over itself such that the corresponding model of the derived mapping space of bimodules $Bimod_{O}^{h}(O;O)$ is an algebra over the one dimensional little cubes operad $mathcal{C}_{1}$. In the present work, we also build an explicit weak equivalence of $mathcal{C}_{1}$-algebras from the loop space $Omega Operad^{h}(O;O)$ to $Bimod_{O}^{h}(O;O)$.