We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Strain and pseudo-magnetic fields in optical lattices from density-assisted tunneling.
- Authors
Jamotte, Maxime; Goldman, Nathan; Di Liberto, Marco
- Abstract
Applying time-periodic modulations is routinely used to control and design synthetic matter in quantum-engineered settings. In lattice systems, this approach is explored to engineer band structures with non-trivial topological properties, but also to generate exotic interaction processes. A prime example is density-assisted tunneling, by which the hopping amplitude of a particle between neighboring sites explicitly depends on their respective occupations. Here, we show how density-assisted tunneling can be tailored in view of simulating the effects of strain in synthetic graphene-type systems. Specifically, we consider a mixture of two atomic species on a honeycomb optical lattice: one species forms a Bose-Einstein condensate in an anisotropic harmonic trap, whose inhomogeneous density profile induces an effective uniaxial strain for the second species through density-assisted tunneling processes. In direct analogy with strained graphene, the second species experiences a pseudo-magnetic field, hence exhibiting relativistic Landau levels and the valley Hall effect. Our proposed scheme introduces a unique platform for the investigation of strain-induced gauge fields, opening the door to future studies of their possible interplay with quantum fluctuations and collective excitations. Realizing and controlling artificial gauge fields in quantum systems constitutes an intriguing route towards simulating of exotic quantum theories. Here, the authors propose a tunable strategy to engineer strain and synthetic magnetic fields in optical lattices from coupling to trapped Bose-Einstein condensates.
- Subjects
OPTICAL lattices; TUNNEL design &; construction; BOSE-Einstein condensation; QUANTUM fluctuations; LANDAU levels; MARKOV spectrum
- Publication
Communications Physics, 2022, Vol 5, Issue 1, p1
- ISSN
2399-3650
- Publication type
Article
- DOI
10.1038/s42005-022-00802-9