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arXiv · 1105.2775

Seeing topological order in time-of-flight measurements

E. Alba·X. Fernandez-Gonzalvo·J. Mur-Petit·J. K. Pachos·J. J. Garcia-Ripoll
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Abstract

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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E. Alba, X. Fernandez-Gonzalvo, J. Mur-Petit, J. K. Pachos, J. J. Garcia-Ripoll. 2012-01-09. Seeing topological order in time-of-flight measurements. https://doi.org/10.1103/physrevlett.107.235301

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