Topological protection of multiparticle dissipative transport
J. Loehr, M. Loenne, A. Ernst, D. de las Heras, and T. M. Fischer
Nat. Commun., 7, 11745, (2016) DOI: 10.1038/ncomms11745
Full text: journal, pdf
Abstract:
Topological protection
allows robust transport of localized phenomena such as quantum information,
solitons, and dislocations.
The transport can be either dissipative or non-dissipative. Here, we experimentally demonstrate and theoretically explain the topologically protected
dissipative motion of colloidal particles above a periodic hexagonal magnetic pattern.
By driving the system with periodic modulation loops of an external and spatially homogeneous magnetic field, we achieve
total control over the motion of diamagnetic and paramagnetic
colloids. We can transport simultaneously and independently each type of colloid along any of the six crystallographic directions of the pattern via
adiabatic or deterministic ratchet motion. Both types of
motion are topologically protected. As an application, we implement an automatic topologically protected
quality control of a chemical reaction between functionalized colloids. Our results are relevant to other systems with the same symmetry.
Additional material/comments:
Download the supplemental material for this paper here or visit the Journal's website.
Download the full text for this article: journal, pdf
Related publications:
1 Topologically protected colloidal transport above a square magnetic lattice (+ info)
2 Lattice symmetries and the topologically protected transport of colloidal particles (+ info)
3 Colloidal topological insulators (+ info)
4 Edge transport at the boundary between topologically equivalent lattices (+ info)
5 Hard topological versus soft geometrical magnetic particle transport (+ info)
6 Colloidal trains (+ info)
7 Simultaneous polydirectional transport of colloidal bipeds (+ info)
8 Braiding with magnetic octupoles (+ info)