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Pattern formation in mixtures of different mass ultracold atoms in optical lattices: an inhomogeneous DMFT study

James K. Freericks

Bulletin of the American Physical SocietyMar 12, 20080 citations

Optical Pattern Formation in Spatially Bunched Atoms: A Self-Consistent Model and Experiment

Bonnie L. Schmittberger, Daniel J. Gauthier

Bulletin of the American Physical SocietyJun 5, 20140 citations

Frustrated phase separation in the momentum distribution of field-driven light-heavy Fermi-Fermi mixtures of ultracold atoms

Herbert F. Fotso, J. Vicente, James K. Freericks

Time-of-flight images are a common tool in ultracold atomic experiments, employed to determine the quasimomentum distribution of the interacting particles. If one introduces a constant artificial electric field, then the quasimomentum distribution evolves in time as Bloch oscillations are generated in the system and then are damped, showing a complex series of patterns. In different-mass Fermi-Fermi mixtures, these patterns are formed from a frustrated phase separation in momentum space that is driven by Mott physics for large electric fields which stabilize them for long times.Time-of-flight images are a common tool in ultracold atomic experiments, employed to determine the quasimomentum distribution of the interacting particles. If one introduces a constant artificial electric field, then the quasimomentum distribution evolves in time as Bloch oscillations are generated in the system and then are damped, showing a complex series of patterns. In different-mass Fermi-Fermi mixtures, these patterns are formed from a frustrated phase separation in momentum space that is driven by Mott physics for large electric fields which stabilize them for long times.

arXiv:1310.6350Physical Review ANov 25, 20141 citation

Probing Atomic Dynamics and Structures Using Optical Patterns

Bonnie L. Schmittberger, Daniel J. Gauthier

Bulletin of the American Physical SocietyJun 9, 20150 citations

Pattern Formation in Mixtures of Ultracold Atoms in Optical Lattices

Maciej M. Maśka, R. Lemański, James K. Freericks +1 more

Regular pattern formation is ubiquitous in nature; it occurs in biological, physical, and materials science systems. Here we propose a set of experiments with ultracold atoms that show how to examine different types of pattern formation. In particular, we show how one can see the analog of labyrinthine patterns (so-called quantum emulsions) in mixtures of light and heavy atoms (that tend to phase separate) by tuning the trap potential and we show how complex geometrically ordered patterns emerge (when the mixtures do not phase separate), which could be employed for low-temperature thermometry. The complex physical mechanisms for the pattern formation at zero temperature are understood within a theoretical analysis called the local density approximation.Regular pattern formation is ubiquitous in nature; it occurs in biological, physical, and materials science systems. Here we propose a set of experiments with ultracold atoms that show how to examine different types of pattern formation. In particular, we show how one can see the analog of labyrinthine patterns (so-called quantum emulsions) in mixtures of light and heavy atoms (that tend to phase separate) by tuning the trap potential and we show how complex geometrically ordered patterns emerge (when the mixtures do not phase separate), which could be employed for low-temperature thermometry. The complex physical mechanisms for the pattern formation at zero temperature are understood within a theoretical analysis called the local density approximation.

arXiv:0802.3894Physical Review LettersAug 7, 200832 citations

Nonlinear motions of atoms in a light field

Vladilen S Letokhov, Vladimir G. Minogin

Jan 1, 19810 citations

Pattern formation in time-of-flight images of heavy-light mixtures of atoms undergoing Bloch oscillations

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