摘要
A scheme for approximately conditional teleportation of an arbitrary two-particle state without Bell-state measurement in cavity QED is presented. The scheme involves four two-level atoms and two single-mode cavities. The detection of atoms 3 and 4 collapses the atoms 1 and 2 to the initial state of atoms 3 and 4, while the cavity fields left in the vacuum state. The probability of success and the fidelity of our scheme are 0.125 and 0.98, respectively.
基金
National Natural Science Foundation of China under Grant No.10674025
the Funds from Key Lab of Quantum Information,University of Science and Technology of China,and the Development Funds of Fuzhou University under Grant No.2007-XY-15
