Optical excitation of nonlinear spin waves
Quantum Gases
2016-07-11 v2 Atomic Physics
Abstract
We demonstrate a technique for exciting spin waves in an ultracold gas of Rb-87 atoms based on tunable AC Stark potentials. This technique allows us to excite normal modes of spin waves with arbitrary amplitudes in the trapped gas, including dipole, quadrupole, octupole, and hexadecapole modes. These modes exhibit strong nonlinearities, which manifest as amplitude dependence of the excitation frequencies and departure from sinusoidal behavior. Our results are in good agreement with a full treatment of a quantum Boltzmann transport equation.
Keywords
Cite
@article{arxiv.1007.4339,
title = {Optical excitation of nonlinear spin waves},
author = {J. M. McGuirk and L. F. Zajiczek},
journal= {arXiv preprint arXiv:1007.4339},
year = {2016}
}
Comments
11 pages, 5 figures