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

A. D. Armour; M. P. Blencowe; K. C. Schwab

doi:10.1103/PhysRevLett.88.148301

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

A. D. Armour, M. P. Blencowe, and K. C. Schwab

Phys. Rev. Lett. 88, 148301 – Published 20 March 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.

Received 12 January 2002

DOI:https://doi.org/10.1103/PhysRevLett.88.148301

Authors & Affiliations

A. D. Armour¹, M. P. Blencowe², and K. C. Schwab³

¹Blackett Laboratory, Imperial College of Science, Technology and Medicine, London SW7 2BW, United Kingdom
²Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755
³Laboratory for Physical Sciences, College Park, Maryland 20740