2011/05/31 by Benjámin Béri, B. Béri, Nigel R. Cooper +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum many-body systems #Topological Materials and Phenomena #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.107.145301
published as Phys. Rev. Lett. 107, 145301 (2011)
openalex publication_date 2011/09/26 · arxiv created 2011/12/20 · arxiv updated 2011/12/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We describe how optical dressing can be used to generate band structures for ultracold atoms with nontrivial Z(2) topological order. Time-reversal symmetry is preserved by simple conditions on the optical fields. We first show how to construct optical lattices that give rise to Z(2) topological insulators in two dimensions. We then describe a general method for the construction of three-dimensional Z(2) topological insulators. A central feature of our approach is a new way to understand Z(2) topological insulators starting from the nearly free electron limit.