Directed transport with real-time external steering and drifts along pre-designed paths using a Brownian motor
2011 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1063-651X, E-ISSN 1095-3787, Vol. 83, no 2Article in journal (Refereed) Published
We have realized real-time steering of the directed transport in a Brownian motor based on cold atoms in optical lattices and demonstrate drifts along predesigned paths. The transport is induced by spatiotemporal asymmetries in the system, where we can control the spatial part, and we show that the response to changes in asymmetry is very fast. In addition to directional steering, a real-time control of the magnitude of the average drift velocity and an on-off switching of the motor are also demonstrated. We use a noninvasive real-time detection of the transport, enabling feedback control of the system.
Place, publisher, year, edition, pages
2011. Vol. 83, no 2
IdentifiersURN: urn:nbn:se:umu:diva-38521DOI: 10.1103/PhysRevE.83.020101OAI: oai:DiVA.org:umu-38521DiVA: diva2:378930
Received 26 September 2010; published 2 February 20112010-12-162010-12-162011-02-04Bibliographically approved