Long-range Rydberg-atom–ion molecules of Rb and Cs

We propose a novel type of Rydberg dimer, consisting Rydberg-state atom bound to distant positive ion. The molecule is formed through long-range electric-multipole interaction between the and point-like present potential energy curves (PECs) that are asymptotically connected with $nP$- or $nD$-states rubidium cesium. PECs exhibit deep, wells which support many vibrational states Rydberg-atom-ion molecules (RAIMs). consider photo-association RAIMs in both weak strong optical-coupling regimes initial neutral atom. Experimental considerations for realization discussed.