A regular Hamiltonian halting ratchet for matter wave transport

Abstract

We report on the design of a Hamiltonian ratchet exploiting periodically at rest integrable trajectories in the phase space of a modulated periodic potential, leading to the linear non-diffusive transport of particles. Using Bose-Einstein condensates in a modulated one-dimensional optical lattice, we make the first observations of this new spatial ratchet transport. In the semiclassical regime, the quantum transport strongly depends on the effective Planck constant due to Floquet state mixing. We also demonstrate the interest of quantum optimal control for efficient initial state preparation into the transporting Floquet states to enhance the transport periodicity.

5 pages + supplementary material

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Cited by in corpus (5)

• Introduction to Theoretical and Experimental aspects of Quantum Optimal Control
• Optimal Floquet Engineering for Large Scale Atom Interferometers
• Time-of-arrival distributions for continuous quantum systems and application to quantum backflow
• A Lawson-time-splitting extended Fourier pseudospectral method for the Gross-Pitaevskii equation with time-dependent low regularity potential
• Quantum ratchet with Lindblad rate equations