Absorption Imaging of Ultracold Atoms on Atom Chips

David A. Smith (1) , Simon Aigner (2) , Sebastian Hofferberth (2 , 3) , Michael Gring (1) , Mauritz Andersson (2 , 4) , Stefan Wildermuth (2)

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Peter Kr\"uger (2 5) Stephan Schneider (1) Thorsten Schumm (1) J\"org Schmiedmayer (1 2) ((1) Vienna Center for Quantum Science Technology Atominstitut TU Wien Vienna Austria (2) Physikalisches Institut Universit\"at Heidelberg Heidelberg Germany (3) Harvard-MIT Center for Ultracold Atoms Harvard University USA (4) School of Information Communication Technology KTH Stockholm Sweden (5) Midlands Ultracold Atom Research Centre University of Nottingham UK)

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classification ⚛️ physics.atom-ph cond-mat.quant-gas

keywords imagingatomchipsultracoldabsorptionanalysisatom-surfaceatomic

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Imaging ultracold atomic gases close to surfaces is an important tool for the detailed analysis of experiments carried out using atom chips. We describe the critical factors that need be considered, especially when the imaging beam is purposely reflected from the surface. In particular we present methods to measure the atom-surface distance, which is a prerequisite for magnetic field imaging and studies of atom surface-interactions.

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Absorption Imaging of Ultracold Atoms on Atom Chips

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