Gommers, R;
Douglas, P;
Bergamini, S;
Goonasekera, M;
Jones, PH;
Renzoni, F;
(2005)
Resonant activation in a nonadiabatically driven optical lattice.
PHYS REV LETT
, 94
(14)
, Article 143001. 10.1103/PhysRevLett.94.143001.
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Abstract
We demonstrate the phenomenon of resonant activation in a nonadiabatically driven dissipative optical lattice with broken time symmetry. The resonant activation results in a resonance as a function of the driving frequency in the current of atoms through the periodic potential. We demonstrate that the resonance is produced by the interplay between deterministic driving and fluctuations, and we also show that by changing the frequency of the driving it is possible to control the direction of the diffusion.
| Type: | Article |
|---|---|
| Title: | Resonant activation in a nonadiabatically driven optical lattice |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.94.143001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.94.143001 |
| Language: | English |
| Additional information: | © 2005 The American Physical Society |
| Keywords: | SURMOUNTING OSCILLATING BARRIERS, ZERO-VOLTAGE STATE, BROWNIAN MOTORS, JOSEPHSON JUNCTION, THERMAL RATCHETS, POTENTIAL WELL, SYSTEMS, FLUCTUATIONS, ESCAPE, DIFFUSION |
| 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/79537 |
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