Optical Manipulation of Spin States in Ultracold Magnetic Atoms via an Inner-Shell Hz Transition

Lanthanides, like erbium and dysprosium, have emerged as powerful platforms for quantum-gas research due to their diverse properties, including a significant large spin manifold in their absolute ground state. However, effectively exploiting the spin richness necessitates precise manipulation of spi...

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Bibliographic Details
Published in:arXiv.org 2024-07
Main Authors: Ferdinand, Claude, Lafforgue, Louis, Arfor Houwman, J J, Mark, Manfred J, Ferlaino, Francesca
Format: Article
Language:English
Subjects:
Composition
Controllability
Dysprosium
Erbium
Ground state
Lanthanides
Magnetic properties
Optical properties
Optics
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Summary:Lanthanides, like erbium and dysprosium, have emerged as powerful platforms for quantum-gas research due to their diverse properties, including a significant large spin manifold in their absolute ground state. However, effectively exploiting the spin richness necessitates precise manipulation of spin populations, a challenge yet to be fully addressed in this class of atomic species. In this work, we present an all-optical method for deterministically controlling the spin composition of a dipolar bosonic erbium gas, based on a clock-like transition in the telecom window at 1299 nm. The atoms can be prepared in just a few tens of microseconds in any spin-state composition using a sequence of Rabi-pulse pairs, selectively coupling Zeeman sublevels of the ground state with those of the long-lived clock-like state. Finally, we demonstrate that this transition can also be used to create spin-selective light shifts, thus fully suppressing spin-exchange collisions. These experimental results unlock exciting possibilities for implementing advanced spin models in isolated, clean and fully controllable lattice systems.
ISSN:2331-8422