Abstract
We show that current in a two-dimensional electron gas (2DEG) can trap ultracold atoms 1 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.
- Received 3 August 2010
DOI:https://doi.org/10.1103/PhysRevA.83.021401
©2011 American Physical Society