Schiavoni, M;
Sanchez-Palencia, L;
Renzoni, F;
Grynberg, G;
(2003)
Phase control of directed diffusion in a symmetric optical lattice.
PHYS REV LETT
, 90
(9)
, Article 094101. 10.1103/PhysRevLett.90.094101.
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Abstract
We demonstrate the phenomenon of directed diffusion in a symmetric periodic potential. This has been realized with cold atoms in a one-dimensional dissipative optical lattice. The stochastic process of optical pumping leads to a diffusive dynamics of the atoms through the periodic structure, while a zero-mean force which breaks the temporal symmetry of the system is applied by phase modulating one of the lattice beams. The atoms are set into directed motion as a result of the breaking of the temporal symmetry of the system.
| Type: | Article |
|---|---|
| Title: | Phase control of directed diffusion in a symmetric optical lattice |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.90.094101 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.90.094101 |
| Language: | English |
| Additional information: | © 2003 The American Physical Society |
| Keywords: | BLOCH OSCILLATIONS, SPATIAL DIFFUSION, THERMAL RATCHETS, DRIVEN SYSTEMS, ATOMS, MOTORS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/136763 |
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