2 papers
cond-mat.stat-mech2011
Vibrational mechanics in an optical lattice: controlling transport via potential renormalization
A. Wickenbrock, P. C. Holz, N. A. Abdul Wahab +3
We demonstrate theoretically and experimentally the phenomenon of vibrational resonance in a periodic potential, using cold atoms in an optical lattice as a model system. A high-fr…
cond-mat.stat-mech2011
Current reversals in a rocking ratchet: the frequency domain
A. Wickenbrock, D. Cubero, N. A. Abdul Wahab +2
Motivated by recent work [D. Cubero et al., Phys. Rev. E 82, 041116 (2010)], we examine the mechanisms which determine current reversals in rocking ratchets as observed by varying…