Controllable 3D atomic Brownian motor in optical lattices
Umeå University, Faculty of Science and Technology, Physics2008 (English)In: The European Physical Journal - Special Topics, ISSN 1951-6355, Vol. 159, no 1, 11-17 p.Article in journal (Refereed) Published
We study a Brownian motor, based on cold atoms in optical lattices, where atomic motion can be induced in a controlled manner in an arbitrary direction, by rectification of isotropic random fluctuations. In contrast with ratchet mechanisms, our Brownian motor operates in a potential that is spatially and temporally symmetric, in apparent contradiction to the Curie principle. Simulations, based on the Fokker-Planck equation, allow us to gain knowledge on the qualitative behaviour of our Brownian motor. Studies of Brownian motors, and in particular ones with unique control properties, are of fundamental interest because of the role they play in protein motors and their potential applications in nanotechnology. In particular, our system opens the way to the study of quantum Brownian motors.
Place, publisher, year, edition, pages
2008. Vol. 159, no 1, 11-17 p.
Atom and Molecular Physics and Optics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-11033DOI: 10.1140/epjst/e2008-00688-8OAI: oai:DiVA.org:umu-11033DiVA: diva2:298294