Negative Refraction of Excitations in the Bose-Hubbard Model
Quantum Gases
2014-11-13 v2 Quantum Physics
Abstract
Ultracold atoms in optical lattices provide a unique opportunity to study Bose- Hubbard physics. In this work we show that by considering a spatially varying onsite interaction it is possible to manipulate the motion of excitations above the Mott phase in a Bose-Hubbard system. Specifically, we show that it is possible to "engineer" regimes where excitations will negatively refract, facilitating the construction of a flat lens.
Keywords
Cite
@article{arxiv.1407.4882,
title = {Negative Refraction of Excitations in the Bose-Hubbard Model},
author = {R. A. Henry and J. Q. Quach and C-H. Su and A. D. Greentree and A. M. Martin},
journal= {arXiv preprint arXiv:1407.4882},
year = {2014}
}
Comments
6 pages, 4 figures