Negative refraction of excitations in the Bose-Hubbard model

Date

2014

Authors

Henry, R.
Quach, J.
Su, C.-H.
Greentree, A.
Martin, A.

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Journal article

Citation

Physical Review A: Atomic, Molecular and Optical Physics, 2014; 90(4):043639-1-043639-5

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R. A. Henry, J. Q. Quach, C.-H. Su, A. D. Greentree, and A. M. Martin

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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 on-site interaction it is possible to manipulate the motion of excitations above theMott 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.

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Published 31 October 2014

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©2014 American Physical Society

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