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arXiv:cond-mat/0112403 · Physical Review Letters

Entanglement and Decoherence of a Micromechanical Resonator via Coupling to a Cooper-Pair Box

Andrew D. Armour, M. P. Blencowe, Keith Schwab

Published Mar 20, 2002• 463 citations
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Abstract

We analyze the quantum dynamics of a micromechanical resonator capacitively coupled to a Cooper-pair 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 decay of the resonator superposition state due to environmental decoherence.

DOI
10.1103/physrevlett.88.148301

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We analyze the quantum dynamics of a micromechanical resonator capacitively coupled to a Cooper-pair 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 decay of the resonator superposition state due to environmental decoherence.
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