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Ultrasensitive torque detection and ultrafast rotation with an optically levitated nanoparticle

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Abstract

We develop an ultrasensitive optically levitated nanoparticle torque sensor and experimentally demonstrate sensitivity of (4.2 ± 1.2) x 10-27Nm/١/Hz at room temperature. We also achieve record high mechanical rotation at several GHz.

© 2020 The Author(s)

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