Entanglement and decoherence of a micromechanical resonator via coupling to a Cooper box

Abstract

We analyse the quantum dynamics of a micromechanical resonator capacitively coupled to a Cooper box. With appropriate quantum state control of the Cooper box, the resonator can be driven into a superposition of spatially separated states. The Cooper box can also be used to probe the environmentally-induced decoherence of the resonator superposition state.

4 pages, 3 figures

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