摘要
A scheme for controlled quantum state swapping is presented using maximally entangled five-qubit state,i.e.,Alice wants to transmit an entangled state of particle a to Bob and at the same time Bob wants to transmit an entangled state of particle b to Alice via the control of the supervisor Charlie.The operations used in this swapping process including C-not operation and a series of single-qubit measurements performed by Alice,Bob,and Charlie.
基金
Supported by the National Natural Science Foundation of China under Grant No. 10902083
Shaanxi Natural Science Foundation under Grant No. 2009JM1007
