Feasibility of a quantum memory for continuous variables based on   trapped ions
  We propose to use a large cloud of cold trapped ions as a medium for quantum optics and quantum information experiments. Contrary to most recent realizations of qubit manipulation based on a small number of trapped and cooled ions, we study the case of traps containing a macroscopic number of ions. We consider in particular the implementation of a quantum memory for quantum information stored in continuous variables and study the impact of the relevant physical parameters on the expected performances of the system. 
Thomas Coudreau (MPQ), Fr\'ed\'eric Grosshans (LPQM), Samuel Guibal   (MPQ), Luca Guidoni (MPQ)