Possible Realization of Cluster States and Quantum InformationTransfer in Cavity QED via Raman Transition

Abstract

We present a scheme to generate cluster states with many atoms in cavityQED via Raman transition. In this scheme, no transfer of quantuminformation between the atoms and cavities is required, the cavityfields are only virtually excited and thus the cavity decay issuppressed during the generation of cluster states. The atoms are alwayspopulated in the two ground states. Therefore, the scheme is insensitiveto the atomic spontaneous emission and cavity decay. We also show how totransfer quantum information from one atom to another.