J
Joseph H. Thywissen
Researcher at University of Toronto
Publications - 89
Citations - 3411
Joseph H. Thywissen is an academic researcher from University of Toronto. The author has contributed to research in topics: Fermi gas & Ultracold atom. The author has an hindex of 30, co-authored 85 publications receiving 3132 citations. Previous affiliations of Joseph H. Thywissen include Centre national de la recherche scientifique & Harvard University.
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Itinerant Ferromagnetism in a Fermi Gas of Ultracold Atoms
Gyu-Boong Jo,Ye-Ryoung Lee,Jae-Hoon Choi,Caleb A. Christensen,Tony Hyun Kim,Joseph H. Thywissen,David E. Pritchard,Wolfgang Ketterle +7 more
TL;DR: The observation of nonmonotonic behavior of lifetime, kinetic energy, and size for increasing repulsive interactions provides strong evidence for a phase transition to a ferromagnetic state, and the observations imply that itinerant ferromagnetism of delocalized fermions is possible without lattice and band structure.
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Localization of Metastable Atom Beams with Optical Standing Waves: Nanolithography at the Heisenberg Limit
K. S. Johnson,Joseph H. Thywissen,Nynke H. Dekker,Karl K. Berggren,A. P. Chu,R. Younkin,Mara Prentiss +6 more
TL;DR: The spatially dependent de-excitation of a beam of metastable argon atoms, traveling through an optical standing wave, produced a periodic array of localized metastable atoms with position and momentum spreads approaching the limit stated by the Heisenberg uncertainty principle.
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Guiding Neutral Atoms on a Chip
Nynke H. Dekker,Changyol Lee,V. Lorent,Joseph H. Thywissen,Stephen P. Smith,Marija Drndic,Robert M. Westervelt,Mara Prentiss +7 more
TL;DR: The guiding of neutral atoms by the magnetic fields due to microfabricated current-carrying wires on a chip is demonstrated and can be extended to integrated atom optics circuits, including beam splitters.
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Momentum spectroscopy of 1D phase fluctuations in Bose-Einstein condensates.
S. Richard,Fabrice Gerbier,Joseph H. Thywissen,Mathilde Hugbart,Philippe Bouyer,Alain Aspect +5 more
TL;DR: The axial momentum distribution of Bose-Einstein condensates is measured with an aspect ratio of 152 using Bragg spectroscopy and the Lorentzian momentum distribution characteristic of one-dimensional phase fluctuations is observed.
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Imaging and addressing of individual fermionic atoms in an optical lattice
Graham Edge,Rhys Anderson,D. Jervis,David McKay,Ryan Day,Stefan Trotzky,Joseph H. Thywissen,Joseph H. Thywissen +7 more
TL;DR: In this article, high-resolution in situ imaging and manipulation of ultracold fermionic atoms in optical lattices are achieved experimentally for ${}^{40}$K with single-atom sensitivity.