Impact of inter-atomic separation on the Coherent Perfect Absorption in two-emitter cavity quantum electrodynamics

The phenomenon of Coherent Perfect Absorption (CPA) makes use of the destructive interference among scattering amplitudes to completely absorb the light incident on a lossy medium. Besides applications in several areas of optical physics, the process of CPA can also be utilized for the storage of quantum information in cavity quantum electrodynamics architectures. Motivated by this application, in this talk, we'll analyze how CPA can be achieved in a bidirectional single-mode optical cavity with two coupled quantum emitters. In particular, we'll discuss in what ways the inter-atomic separation and the atomic saturation (due to strong input field pumping) will influence the perfect absorption of two identical lasers shined on such a setup in the presence of cavity mirror and spontaneous emission losses.