The preparation of the atoms in the excited state, before they enter the cavity, seems to work. Efforts are under way to laser-cool further the atomic velocity distribution, in directions transverse to the atomic beam flow.
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)
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!
Welcome to Zeyuan Zhang, the new post-doctoral researcher joining the superradiant laser!
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.
We report on the study of itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime.
arXiv:2501.11402 (2025) / Phys. Rev. Lett. 136, 103401 (2026)
Feodor Lynen Research Fellowships from the Humboldt foundation
Congratulations to Husain Ahmed for his PhD defense!
In this paper, we present a systematic derivation of the effective Hamiltonian for the nuclear spin states of ultracold fermionic atoms due to such an off-resonance light. We obtain compact expressions for the scalar, vector, and tensor light shifts taking into account both linear and quadratic contributions to the hyperfine splitting.
arXiv:2404.12429 (2024) / Phys. Rev. Research 6, 033293 (2024)
