| 1. |
- Dion, Claude, et al.
(författare)
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Controllable 3D atomic Brownian motor in optical lattices
- 2008
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Ingår i: The European Physical Journal - Special Topics. - : Springer Science and Business Media LLC. - 1951-6355 .- 1951-6401. ; 159:1, s. 11-17
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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| 2. |
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| 3. |
- Jersblad, Johan, et al.
(författare)
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Anisotropic velocity distributions in 3D dissipative optical lattices
- 2003
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Ingår i: European Physical Journal D. - : Springer Science and Business Media LLC. - 1434-6060 .- 1434-6079. ; 22:3, s. 333-339
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Tidskriftsartikel (refereegranskat)abstract
- We present a direct measurement of velocity distributions in two dimensions by using an absorption imaging technique in a 3D near resonant optical lattice. The results show a clear difference in the velocity distributions for the different directions. The experimental results are compared with a numerical 3D semi-classical Monte-Carlo simulation. The numerical simulations are in good qualitative agreement with the experimental results.
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| 4. |
- Jonsell, Svante, et al.
(författare)
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Raglande atomer nyktrar till
- 2006
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Ingår i: Fysikaktuellt. - 0283-9148. ; :2, s. 10-
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Tidskriftsartikel (populärvet., debatt m.m.)
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