Volume 104, Number 6, December 2013
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||21 January 2014|
An eightfold optical quasicrystal with cold atoms
1 Laboratoire de Physique des Solides, Université Paris-Sud - F-91405 Orsay, France
2 CPHT, Ecole Polytechnique, UMR 7644 - F-91128 Palaiseau Cedex, France
Received: 8 November 2013
Accepted: 17 December 2013
We propose a means to realize two-dimensional quasiperiodic structures by trapping atoms in an optical potential. The structures have eightfold symmetry and are closely related to the well-known quasiperiodic octagonal (Ammann-Beenker) tiling. We describe the geometrical properties of the structures obtained by tuning parameters of the system. We discuss some features of the corresponding tight-binding models, and experiments to probe quantum properties of this optical quasicrystal.
PACS: 61.44.Br – Quasicrystals / 67.85.-d – Ultracold gases, trapped gases / 71.10.Fd – Lattice fermion models (Hubbard model, etc.)
© EPLA, 2013
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