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Entanglement and decoherence of a micromechanical resonator via coupling to a Cooper-pair box
A D Armour1, M P Blencowe, K C Schwab
1Blackett Laboratory, Imperial College of Science, Technology and Medicine, London SW7 2BW, United Kingdom.
Physical Review Letters
|April 17, 2002
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.