Coherent control over the high-dimensional space of the nuclear spin of alkaline-earth atoms

We demonstrate coherent manipulation of the nuclear degrees of freedom of ultracold ground-state strontium-87 atoms, thus providing a toolkit for fully exploiting the corresponding large Hilbert space as a quantum resource and for quantum simulation experiments with 𝔰u(𝑁)-symmetric matter.
arXiv:2501.01731 (2025) / PRX Quantum 6, 020352 (2025)

Generators of the SU(10) group

Now, with the implementation of evolution operators deriving from the generators of the SU(10) group, complete control over the quantum state of the nuclear spins is achievable. This is an opportunity to use the full Hilbert space of strontium 87 atoms in experiments and for quantum technologies, that we explore in our published paper. For example, we use it to measure simultaneously two non-commuting observables of pseudo-spin ensembles!

Probing coherences and itinerant magnetism

We use dynamical decoupling to preserve spin coherence against magnetic fluctuations, which allows us to study itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime. The results are presented in our new paper.