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Many-body Quantum Dynamics

Cavendish Laboratory

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Floquet Heating in PRL

last modified Nov 17, 2017 06:30 PM
Our latest work on Interaction Dependent Heating and Atom Loss in a Periodically Driven Optical Lattice has been published as an Editor's suggestion in PRL

The periodic driving of optical lattices has enabled the creation of novel band structures not realizable in static lattice systems, such as topological bands for neutral particles. However, especially driven systems of interacting bosonic particles often suffer from strong heating. We have systematically studied heating in an interacting Bose-Einstein condensate in a driven one-dimensional optical lattice. We find interaction dependent heating rates that depend on both the scattering length and the driving strength and identify the underlying resonant intra- and interband scattering processes. By comparing the experimental data and theory, we find that, for driving frequencies well above the trap depth, the heating rate is dramatically reduced by the fact that resonantly scattered atoms leave the trap before dissipating their energy into the system. This mechanism of Floquet evaporative cooling offers a powerful strategy to minimize heating in Floquet engineered quantum gases.

 

Phys. Rev. Lett. 119, 200402 (2017)

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Floquet Heating in PRL

Nov 17, 2017

Our latest work on Interaction Dependent Heating and Atom Loss in a Periodically Driven Optical Lattice has been published as an Editor's suggestion in PRL

Proceeding on MBL published by Royal Society

Nov 09, 2017

The proceedings of our Royal Society meeting on the Breakdown of ergodicity in quantum systems has been published in the Philosophical Transactions of the Royal Society and contains many excellent reviews on various aspects of Many-body localization (MBL).