Bilayers of Rydberg atoms as a quantum simulator for unconventional superconductors

Hague, J. P. and MacCormick, C. (2012). Bilayers of Rydberg atoms as a quantum simulator for unconventional superconductors. Physical Review Letters, 109(22), article no. 223001.

DOI: https://doi.org/10.1103/PhysRevLett.109.223001

URL: http://prl.aps.org/abstract/PRL/v109/i22/e223001

Abstract

In condensed matter, it is often difficult to untangle the effects of competing interactions, and this is especially problematic for superconductors. Quantum simulators may help: here we show how exploiting the properties of highly excited Rydberg states of cold fermionic atoms in a bilayer lattice can simulate electron-phonon interactions in the presence of strong correlation—a scenario found in many unconventional superconductors. We discuss the core features of the simulator, and use numerics to compare with condensed matter analogues. Finally, we illustrate how to achieve a practical, tunable implementation of the simulation using “painted spot” potentials.

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