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Article Dans Une Revue Physical Review Letters Année : 2023

Hamiltonian Ratchet for Matter-Wave Transport

Résumé

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 spatial ratchet, which provides way to coherently transport matter waves with possible applications in quantum technologies. 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.
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Dates et versions

hal-04225024 , version 1 (02-10-2023)

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Nathan Dupont, Lucas Gabardos, Floriane Arrouas, Nicolas Ombredane, Juliette Billy, et al.. Hamiltonian Ratchet for Matter-Wave Transport. Physical Review Letters, 2023, 131 (13), pp.133401. ⟨10.1103/PhysRevLett.131.133401⟩. ⟨hal-04225024⟩
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