Sensing Atomic Motion from the Zero Point to Room Temperature with Ultrafast Atom Interferometry
Quantum Physics
2016-03-23 v2 Atomic Physics
Abstract
We sense the motion of a trapped atomic ion using a sequence of state-dependent ultrafast momentum kicks. We use this atom interferometer to characterize a nearly-pure quantum state with phonon and accurately measure thermal states ranging from near the zero-point energy to , with the possibility of extending at least 100 times higher in energy. The complete energy range of this method spans from the ground state to far outside of the Lamb-Dicke regime, where atomic motion is greater than the optical wavelength. Apart from thermometry, these interferometric techniques are useful for characterizing ultrafast entangling gates between multiple trapped ions.
Cite
@article{arxiv.1507.06591,
title = {Sensing Atomic Motion from the Zero Point to Room Temperature with Ultrafast Atom Interferometry},
author = {K. G. Johnson and B. Neyenhuis and J. Mizrahi and J. D. Wong-Campos and C. Monroe},
journal= {arXiv preprint arXiv:1507.06591},
year = {2016}
}