Entanglement reciprocation between atomic qubits and entangled coherent   state
  Introducing classical fields, we can transfer entanglement completely from discrete qubits into entangled coherent state. The entanglement also can be retrieved from the continuous-variable state of the cavities to the atomic qubits. Via postselection measure, atomic entangled state and entangled coherent state can be mutual transformed fully. 
Ling Zhou, Guo-Hui Yang