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arXiv · 1011.5057

Non-classical field state stabilization in a cavity by reservoir engineering

Alain Sarlette·Jean-Michel Raimond·Michel Brune·Pierre Rouchon
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Abstract

We propose an engineered reservoir inducing the relaxation of a cavity field towards non-classical 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 method could be implemented in state-of-the-art experiments and lead to interesting insights into mesoscopic quantum state superpositions and into their protection against decoherence.

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Alain Sarlette, Jean-Michel Raimond, Michel Brune, Pierre Rouchon. 2011-02-09. Non-classical field state stabilization in a cavity by reservoir engineering. https://doi.org/10.1103/physrevlett.107.010402

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