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arXiv · 1007.5339

Atom chips with two-dimensional electron gases: theory of near surface trapping and ultracold-atom microscopy of quantum electronic systems

G. Sinuco-León·B. Kaczmarek·P. Krüger·T. M. Fromhold
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Abstract

We show that current in a two-dimensional electron gas (2DEG) can trap ultracold atoms $<1 μ$m away with orders of magnitude less spatial noise than a metal trapping wire. This enables the creation of hybrid systems, which integrate ultracold atoms with quantum electronic devices to give extreme sensitivity and control: for example, activating a single quantized conductance channel in the 2DEG can split a Bose-Einstein condensate (BEC) for atom interferometry. In turn, the BEC offers unique structural and functional imaging of quantum devices and transport in heterostructures and graphene.

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G. Sinuco-León, B. Kaczmarek, P. Krüger, T. M. Fromhold. 2011-02-01. Atom chips with two-dimensional electron gases: theory of near surface trapping and ultracold-atom microscopy of quantum electronic systems. https://doi.org/10.1103/physreva.83.021401

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