Remote information concentration by a Greenberger-Horne-Zeilinger state and by a bound entangled state
Ya‐Fei Yu, Jian Feng, Mingsheng Zhan · Physical Review A · 2003
We compare remote quantum information concentration by a Greenberger-Horne-Zeilinger (GHZ) state with an unlockable bound entangled state. We find that in view of communication security the bound entangled state works better than the GHZ state.