四原子团簇态的腔QED量子隐形传态方案

4原子团簇态的腔QED量子隐形传态方案
 
摘要：我们提出了两个基于腔量子电动力学的4原子团簇态隐形传态方案，在这两个方案中我们分别选取4个EPR对和两个GHZ态作为量子通道。通过原子-腔场大失谐作用，我们可以完成纠缠的量子通道的制备，以及联合Bell基和3量子比特测量，并以理论上为1的成功率实现团簇态的隐形传送。值得指出的是这两个方案都对腔场的退相干和热场不敏感。

关键词：量子纠缠；团簇态；量子隐形传态；腔QED；大失谐

Schemes for teleportation of four-atom cluster state in
cavity QED
 
Abstract: We present two feasible schemes for teleportation of four-atom cluster state in cavity quantum electrodynamics (QED). Four Einstein-Podolsky-Rosen (EPR) pairs and two Greenberg-Horne-Zeilinger (GHZ) pairs are chosen as the quantum channel respectively. By using the atom-cavity field large detuning interaction, we can prepare the entangled quantum channel , accomplish the joint Bell-state and three-qubit measurements and teleport the cluster state from the sender (Alice) to the Receiver (Bob) successfully with a probability of one theoretically. It is noted that two schemes are insensitive to both the cavity decay and the thermal field.

Keywords: quantum entanglement; cluster state; quantum teleportation; cavity QED; large detuning