The possibility to coherently control a quantum rotor is investigated theoretically. The rotor is realized by an antiferromagnetic spin-1 Bose-Einstein condensate, trapped in the optical field of a Fabry-Perot resonator. By tuning the pumping field of the resonator, coherent control over the rotor is achieved. The technique is illustrated by the numerical simulation of a protocol that transforms the rotor's ground state into a squeezed state. The detection of the squeezed state via measurement of intensity-correlations of the cavity field is proposed.
@article{arxiv.1303.0600,
title = {Optical Control of a Quantum Rotor},
author = {Lukas F. Buchmann and H. Jing and C. Raman and P. Meystre},
journal= {arXiv preprint arXiv:1303.0600},
year = {2013}
}