62 citations · 569 across the 16 of their papers we have counts for
6 papers · 1 filter
Nondestructive Probing of Means, Variances, and Correlations of Ultracold-Atomic-System Densities via Qubit Impurities
Thomas J. Elliott, Tomi H. Johnson
We show how impurity atoms can measure moments of ultracold atomic gas densities, using the example of bosons in a one-dimensional lattice. This builds on a body of work regarding…
Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC
T. H. Johnson, Y. Yuan, W. Bao +3
We investigate cold bosonic impurity atoms trapped in a vortex lattice formed by condensed bosons of another species. We describe the dynamics of the impurities by a bosonic Hubbar…
Non-destructive selective probing of phononic excitations in a cold Bose gas using impurities
D. Hangleiter, M. T. Mitchison, T. H. Johnson +3
We introduce a detector that selectively probes the phononic excitations of a cold Bose gas. The detector is composed of a single impurity atom confined by a double-well potential,…
Breathing oscillations of a trapped impurity in a Bose gas
T. H. Johnson, M. Bruderer, Y. Cai +3
Motivated by a recent experiment [J. Catani et al., arXiv:1106.0828v1 preprint, 2011], we study breathing oscillations in the width of a harmonically trapped impurity interacting w…
Impurity transport through a strongly interacting bosonic quantum gas
T. H. Johnson, S. R. Clark, M. Bruderer +1
Using near-exact numerical simulations we study the propagation of an impurity through a one-dimensional Bose lattice gas for varying bosonic interaction strengths and filling fact…
Phonon resonances in atomic currents through Bose-Fermi mixtures in optical lattices
M. Bruderer, T. H. Johnson, S. R. Clark +3
We present an analysis of Bose-Fermi mixtures in optical lattices for the case where the lattice potential of the fermions is tilted and the bosons (in the superfluid phase) are de…