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Physical Review Letters 107, 1 (2011) 010402
Stabilization of Nonclassical States of the Radiation Field in a Cavity by Reservoir Engineering
Alain Sarlette 1, Jean-Michel Raimond 2, Michel Brune 2, Pierre Rouchon 3
(2011-07-01)

We propose an engineered reservoir inducing the relaxation of a cavity field towards nonclassical states. It is made up of two-level atoms crossing the cavity one at a time. Each atom-cavity interaction is first dispersive, then resonant, then dispersive again. The reservoir pointer states are those produced by an effective Kerr Hamiltonian acting on a coherent field. We thereby stabilize squeezed states and quantum superpositions of multiple coherent components in a cavity having a finite damping time. This robust decoherence protection method could be implemented in state-of-the-art experiments.
1:  Department of Electrical Engineering and Computer Science (Institut Montefiore)
Université de Liège
2:  Laboratoire Kastler Brossel (LKB (Lhomond))
CNRS : UMR8552 – Université Pierre et Marie Curie [UPMC] - Paris VI – Ecole normale supérieure de Paris - ENS Paris
3:  Centre Automatique et Systèmes (CAS)
MINES ParisTech - École nationale supérieure des mines de Paris
Engineering Sciences/Automatic
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