Detecting paired and counterflow superfluidity via dipole oscillations

We suggest an experimentally feasible procedure to observe counterflow and paired superfluidity in ultracold atom systems. We study the time evolution of one-dimensional mixtures of bosonic atoms in an optical lattice following an abrupt displacement of an additional weak confining potential. We fin...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2011-10, Vol.84 (4), Article 041609
Main Authors: Hu, Anzi, Mathey, L., Tiesinga, Eite, Danshita, Ippei, Williams, Carl J., Clark, Charles W.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIPOLES
INTERACTIONS
ONE-DIMENSIONAL CALCULATIONS
OSCILLATIONS
POTENTIALS
TIME DEPENDENCE
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Summary:We suggest an experimentally feasible procedure to observe counterflow and paired superfluidity in ultracold atom systems. We study the time evolution of one-dimensional mixtures of bosonic atoms in an optical lattice following an abrupt displacement of an additional weak confining potential. We find that the dynamic responses of the paired superfluid phase for attractive interspecies interactions and the counterflow superfluid phase for repulsive interactions are qualitatively distinct and reflect the quasi-long-range order that characterizes these phases. These findings suggest a clear experimental procedure for their detection, and give an intuitive insight into their dynamics.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.84.041609