Conversion of entanglement between continuous variable and qubit systems
  We investigate how entanglement can be transferred between continuous variable and qubit systems. We find that a two-mode squeezed vacuum state and a continuous variable Werner state can be converted to the product states of infinitive number of two-qubit states while keeping the entanglement. The reverse process is also possible. 
Xiao-yu Chen, Liang-neng Wu, Li-zhen Jiang, Ya-zhuo Li