Scheme for Implementing Quantum Dense Coding and Teleportation with Tripartite Entangled State in Cavity QED

摘要

In this paper,we present a pecufiar tripartite entangled state that is inequivalent to both the GHZ state andthe W state,and then propose to implement efficient quantum information processing such as quantum dense codingand teleportation with this entangled state in cavity QED.In this scheme the atoms interact with a highly detunedcavity field with the assistance of a strong classical driven field.It does not require the transfer of quantum informationbetween the atomic system and the cavity,and then our scheme is insensitive to both the cavity decay and the thermalfield.