Quantum cloning of continuous-variable entangled states

  title={Quantum cloning of continuous-variable entangled states},
  author={Christian Weedbrook and Nicolai B. Grosse and Thomas Symul and P. K. Lam and Timothy C. Ralph},
We consider the quantum cloning of continuous variable entangled states. This is achieved by introducing two symmetric entanglement cloning machines or e-cloners : a local e-cloner and a global e-cloner; where we look at the preservation of entanglement in the clones under the condition that the fidelity of the clones is maximized. These cloning machines are implemented using simple linear optical elements such as beam splitters and homodyne detection along with squeeze gates. We show that the… CONTINUE READING
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