Further, as we continue to increase the cavity loss, we see essentially the same splitting, but with extra broadening relative to the no-loss cavity case. This is expected as the cavity loss rate adds another relaxation channel, i.e., the loss can also be thought of as an additional set of bath modes now attached to the upper and lower polariton states. At a very high loss rate (Γ ≫ g c ), we start to see that two polariton peaks begin to merge into one, indicating that the strong-coupling condition is no longer fulfilled.