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|Title:||Negative refraction of excitations in the Bose-Hubbard model|
|Citation:||Physical Review A, 2014; 90(4):043639-1-043639-5|
|Publisher:||American Physical Society|
|R. A. Henry, J. Q. Quach, C.-H. Su, A. D. Greentree, and A. M. Martin|
|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.|
|Description:||Published 31 October 2014|
|Rights:||©2014 American Physical Society|
|Appears in Collections:||Physics publications|
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