Vacuum fluctuations induced entanglement between two mesoscopic systems

Abstract

We study the dynamics of a pair of molecular ensembles trapped inside a superconducting resonator through which they are strongly coupled via a microwave field mode. We find that entanglement can be generated via 'vacuum fluctuations' even when the molecules and cavity field are initially prepared in their ground state. This entanglement is created in a relatively short time and without the need for further manipulation of the system. It therefore provides a convenient scheme to entangle two mesoscopic systems, and may well be useful for quantum information processing. © IOP Publishing Ltd and Deutsche Physikalische Gesellschan.