Realization of uniform synthetic magnetic fields by periodically shaking an optical square lattice
Abstract
Shaking a lattice system, by modulating the location of its sites periodically in time, is a powerful method to create effective magnetic fields in engineered quantum systems, such as cold gases trapped in optical lattices. However, such schemes are typically associated with space-dependent effective masses (tunneling amplitudes) and non-uniform flux patterns. In this work we investigate this phenomenon theoretically, by computing the effective Hamiltonians and quasienergy spectra associated with several kinds of lattice-shaking protocols. A detailed comparison with a method based on moving lattices, which are added on top of a main static optical lattice, is provided. This study allows the identification of novel shaking schemes, which simultaneously provide uniform effective mass and magnetic flux, with direct implications for cold-atom experiments and photonics.
Keywords
Cite
@article{arxiv.1605.09604,
title = {Realization of uniform synthetic magnetic fields by periodically shaking an optical square lattice},
author = {C. E. Creffield and G. Pieplow and F. Sols and N. Goldman},
journal= {arXiv preprint arXiv:1605.09604},
year = {2016}
}
Comments
15 pages, 10 eps figures