Amplitude Sensing below the Zero-Point Fluctuations with a Two-Dimensional Trapped-Ion Mechanical Oscillator

Author(s): K. A. Gilmore, J. G. Bohnet, B. C. Sawyer, J. W. Britton, and J. J. Bollinger

A spin-based technique is able to measure the center-of-mass motion of a 2D crystal of trapped ions to a precision 40 times below the object’s zero-point energy.

[Phys. Rev. Lett. 118, 263602] Published Thu Jun 29, 2017