Generation of macroscopic entangled coherent states for distant ensembles of polar molecules via effective coupling to a superconducting charge qubit

摘要

We propose a potentially practical scheme for creating macroscopic entangled coherent states (ECSs) betweenntwo distant ensembles of polar molecules (PMs) placed, respectively, in separate transmission-line resonatorsn(TLRs) interconnected by a superconducting charge qubit. The ECS between two PMensembles can be generatednin the dispersive regime through control of the superconducting qubit under classical strong-driving conditions,nduring which the TLRs are only virtually excited. The tunable coupling of the TLR hybrid system provides usnthe potential of extending the ECS generation to multimode cases. The experimental feasibility of the scheme isndiscussed briefly based on currently available techniques.