Exciting a d-density wave in an optical lattice with driven tunneling

Details Exciting a d-density wave in an optical lattice with driven tunneling Exciting a d-density wave in an optical lattice with driven tunneling

2007-03-26

arxiv.org/abs/cond-mat/0703641v2

Phys. Rev. Lett. 99, 113002 (2007)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.99.113002

Quantum phases with unusual symmetries may play a key role for the understanding of solid state systems at low temperatures. We propose a realistic scenario, well in reach of present experimental techniques, which should permit to produce a stationary quantum state with $d_{x^2-y^2}$-symmetry in a two-dimensional bosonic optical square lattice. This state, characterized by alternating rotational flux in each plaquette, arises from driven tunneling implemented by a stimulated Raman scattering process. We discuss bosons in a square lattice, however, more complex systems involving other lattice geometries appear possible.

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