提出一个非常简单的实验可行的方案.这个方案的原子-腔场系统由两个三能级原子和一个非共振腔组成,在原子与腔场相互作用的过程中,同时注入经典场,由这个系统组成的方案可以很容易实现N比特原子簇态.在原子与腔场的作用过程中,因为腔场一直处于激发态,所以不需要在原子和腔场之间传送量子信息.这个方案有两大优点.一、不需要任何测量就能实现;二、对于原子与非共振腔场相互作用同时加经典场这个系统,他们的相互作用时间不会随着原子的数目增加而改变.这个方案在当前技术下很有可能被实现.
A simple experimental scheme to generate N-qubit atom cluster states is proposed. The task can be realized through the interaction between two three-level atoms within a nonresonant cavity and meanwhile driven by a classical field. During the interaction time, the cavity field is only virtually excited, and no quantum information transfer between the atoms and the cavity is required. The scheme is implemented without any measurement. Time of implementation of the protocol does not change with the increase of the number of qubits. Our scheme can be realized under current technology.
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