摘要
We propose an experimentally feasible scheme for implementing quantum restoring machine of the optimal universal 1→ 2 quantum cloning machine in the context of cavity QED. In our scheme, two atoms （the clones） simultaneously interact with a cavity field, and meanwhile they are driven by a classical field. Then an arbitrary unknown input state can be restored in the ancilla by applying appropriate unitary local operation.
基金
The project supported by National Natural Science Foundation of China under Grant Nos. 10574001 and 10674001, the Program of the Education Department of Anhui Province under Grant No. 2004kj029, and the Talent Foundation of Anhui University
