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arXiv · 1412.6864

Macroscopic superpositions and gravimetry with quantum magnetomechanics

Mattias T. Johnsson·Gavin K. Brennen·Jason Twamley
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Abstract

We utilise a magneto-mechanical levitated massive resonator in the quantum regime to prepare highly macroscopic quantum superposition states. Using these macroscopic superpositions we present a novel interferometry protocol to perform absolute gravimetry with a sensitivity that exceeds state of the art atom-interferometric and corner-cube gravimeters by a factor of 20. In addition, our scheme allows probing the gravitational field on a length scale eight orders of magnitude smaller than other methods.

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Mattias T. Johnsson, Gavin K. Brennen, Jason Twamley. 2014-12-22. Macroscopic superpositions and gravimetry with quantum magnetomechanics. https://arxiv.org/abs/1412.6864

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