C
Christopher R. Ekstrom
Researcher at Massachusetts Institute of Technology
Publications - 43
Citations - 1995
Christopher R. Ekstrom is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Atomic clock & Interferometry. The author has an hindex of 14, co-authored 43 publications receiving 1849 citations. Previous affiliations of Christopher R. Ekstrom include University of Innsbruck & University of Konstanz.
Papers
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Proceedings Article
Interferometer for atoms
TL;DR: An atom interferometer made from three 400 nm period transmission gratings with deBroglie wavelength 0.016 nm displayed an interference signal of 70 Hz on a 300 Hz background.
Journal ArticleDOI
An interferometer for atoms.
TL;DR: In this article, a three-grating geometry is used, in which the interfering beams are distinctly separated in both position and momentum, and the interference signal is 70 counts/s, which allows us to determine the phase to 0.1 rad in 1 min.
Journal ArticleDOI
Near-field imaging of atom diffraction gratings: The atomic Talbot effect.
Michael Chapman,Christopher R. Ekstrom,Troy D. Hammond,Jörg Schmiedmayer,Bridget E. Tannian,Stefan Wehinger,David E. Pritchard +6 more
TL;DR: The Talbot effect, the self-imaging of a periodic structure, with atom waves is demonstrated, and the successive recurrence of these self-images is measured as a function of the distance from the imaged grating.
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Measurement of the electric polarizability of sodium with an atom interferometer
Christopher R. Ekstrom,Christopher R. Ekstrom,Jörg Schmiedmayer,Jörg Schmiedmayer,Michael Chapman,Michael Chapman,Troy D. Hammond,Troy D. Hammond,David E. Pritchard,David E. Pritchard +9 more
TL;DR: In this paper, an atom interferometer with interfering beams that are physically isolated by a metal foil was constructed, and the phase shift induced from the quadratic Stark effect was analyzed.
Journal ArticleDOI
Loss of spatial coherence by a single spontaneous emission.
TL;DR: The loss of transverse spatial coherence of an atomic wave function after a single spontaneous emission is demonstrated and the period of the standing light wave is changed to mapped the loss of spatial coherent as a function of the transverse coordinate.