Directed motion for delta-kicked atoms with broken symmetries: comparison between theory and experiment

Details Directed motion for delta-kicked atoms with broken symmetries: comparison between theory and experiment Directed motion for delta-kicked atoms with broken symmetries: comparison between theory and experiment

2003-09-19

arxiv.org/abs/quant-ph/0309149v2

Phys. Rev. Lett 98 073002 (2007)

Physics

Quantum Physics

5 pages, 5 figures Now includes experimental data on time evolution and comparison with theory

Scientific paper

10.1103/PhysRevLett.98.073002

We report an experimental investigation of momentum diffusion in the delta-function kicked rotor where time symmetry is broken by a two-period kicking cycle and spatial symmetry by an alternating linear potential. We exploit this, and a technique involving a moving optical potential, to create an asymmetry in the momentum diffusion that is due to the classical chaotic diffusion. This represents a realization of a type of Hamiltonian quantum ratchet.

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