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A versatile scheme for read-out and actuation of nanomechanical motion using silica microspheres

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We employ silica microspheres to detect and actuate nanomechanical motion. With Si3N4-nanostrings, we achieve significant passive cooling by radiation pressure. Feedback-cooling enables stable operation at optical powers beyond the parametric-instability threshold, paving the way to detect quantum backation.

© 2012 Optical Society of America

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