Seeing topological order in time-of-flight measurements

Details Seeing topological order in time-of-flight measurements Seeing topological order in time-of-flight measurements

2011-05-13

arxiv.org/abs/1105.2775v4

Phys. Rev. Lett. 107, 235301 (2011)

Physics

Condensed Matter

Quantum Gases

Scientific paper

10.1103/PhysRevLett.107.235301

In this work we provide a general methodology to directly measure topological order in cold atom systems. As an application we propose the realisation of a characteristic topological model, introduced by Haldane, using optical lattices loaded with fermionic atoms in two internal states. We demonstrate that time-of-flight measurements directly reveal the topological order of the system in the form of momentum space skyrmions.

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