A ROBUST SCHEME FOR GENERATING A PECULIAR W-CLASS STATE WITH ATOMS TRAPPED IN SEPARATE CAVITIES
Bin Xin, Peng Xu, Yi-Zhuang Zheng · International Journal of Quantum Information · 2011
Utilizing coincidence measurement of photons leaking out of distinct cavities, we present a scheme for generating a peculiar W-class state which has recently been shown to be better than canonical W states for several quantum information processing tasks. In the traditional coincidence measurement, the probability of success can only be as high as 50% for each measurement. While under the condition of "weakly driven approach", the successful probability of coincidence measurement could achieve 100% in an ideal situation. Moreover, the scheme presented is robust and has high fidelity. The realization of teleportation with the peculiar W-class state has also been discussed briefly.