Abstract:
We present details of an experimental platform for studying Fermi polarons in a quantum-gas mixture. The system consists of about a thousand bosonic 133Cs impurities immersed in a deeply degenerate Fermi gas (T/TF∼0.2) of approximately 2×105 6Li atoms in a single hyperfine state, with interspecies interactions tunable via a Feshbach resonance. Using optical Raman spectroscopy without relative momentum transfer, we perform injection spectroscopy and thereby create the Fermi polaron. Owing to the large mass imbalance between the two species, the setup provides access to previously unexplored regimes of Fermi polarons.
M. Rautenberg, T. Krom, E. Lippi, L. Chomaz, M. Weidemüller, „The heavy Fermi polaron I:
the Lithium-Cesium experiment“, 27. Aug. 2026, arXiv:2608.27322 (2026).
https://arxiv.org/abs/2608.27322
Related to Project C03