Quantum emulation of a spin system with topologically protected ground states using superconducting quantum circuits

Details Quantum emulation of a spin system with topologically protected ground states using superconducting quantum circuits Quantum emulation of a spin system with topologically protected ground states using superconducting quantum circuits

2009-12-03

arxiv.org/abs/0912.0633v1

Phys. Rev. B 81, 014505 (2010)

Physics

Condensed Matter

Superconductivity

12 pages, 3 figures; an enlarged version of arXiv: 0809.0051v1. Phys. Rev. B (in press)

Scientific paper

Using superconducting quantum circuit elements, we propose an approach to experimentally construct a Kitaev lattice, which is an anisotropic spin model on a honeycomb lattice with three types of nearest-neighbor interactions and having topologically protected ground states. We study two particular parameter regimes to demonstrate both vortex and bond-state excitations. Our proposal outlines an experimentally realizable artificial many-body system that exhibits exotic topological properties.

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