Publications (98)
Bose-Einstein condensation in a frustrated triangular optical lattice
Peter Janzen, Wen-Min Huang, Ludwig Mathey
The recent experimental condensation of ultracold atoms in a triangular optical lattice with negative effective tunneling energies paves the way to study frustrated systems in a co…
Observing light-induced Floquet band gaps in the longitudinal conductivity of graphene
Lukas Broers, Ludwig Mathey
We propose optical longitudinal conductivity as a realistic observable to detect light-induced Floquet band gaps in graphene. These gaps manifest as resonant features in the conduc…
Cooper problem in a cuprate lattice
Ali Sanayei, Ludwig Mathey
We solve the Cooper problem in a cuprate lattice by utilizing a three-band model. We determine the ground state of a Cooper pair for repulsive on-site interactions, and demonstrate…
Influence of electron-phonon coupling on low temperature phases of metallic single-wall carbon nanotubes
Junichi Okamoto, Ludwig Mathey, Wen-Min Huang
We investigate the effect of electron-phonon coupling on low temperature phases in metallic single-wall carbon nanotubes. We obtain low-temperature phase diagrams of armchair and z…
Non-linear photoconductivity of strongly driven graphene
Lukas Broers, Ludwig Mathey
We present the non-linear DC photoconductivity of graphene under strong infra-red (IR) radiation. The photoconductivity is obtained as the response to a strong DC electric field, w…
Pulse engineering via projection of response functions at infinite nonlinear order
Lia Kley, Ludwig Mathey
Optimal control problems arise in a wide range of scientific disciplines, but the corresponding optimization algorithms often display a strong dependence on hyperparameters that si…