Phys.org September 12, 2024
Polar molecules confined in an optical lattice are a versatile platform to explore spin-motion dynamics based on strong, long-range dipolar interactions. A team of researchers in the US (University of Colorado, Harvard University, industry) used Floquet engineering to realize new quantum many-body systems of polar molecules. Using a spin encoded in the two lowest rotational states of ultracold 40K87Rb molecules, they mutually validated XXZ spin models tuned by a Floquet microwave pulse sequence against those tuned by a d.c. electric field. This validation sets the stage for the realization of Hamiltonians inaccessible with static fields. They observed two-axis twisting mean-field dynamics, generated by a Floquet-engineered XYZ model using itinerant molecules in two-dimensional layers. According to the researchers, in the future Floquet-engineered Hamiltonians could generate entangled states for molecule-based precision measurement or could take advantage of the rich molecular structure for quantum simulation of multi-level systems… read more. TECHNICAL ARTICLE
Engineering OAT and TAT. Credit: Nature volume 633, pages332–337, 11 September 2024