Physical Review Letters
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Probing Bardeen-Cooper-Schrieffer Pairing and Quasiparticle Formation in Ultracold Gases by Rydberg Atom Spectroscopy
Author(s): Emilio Ramos Rodríguez, Marcel Gievers, and Richard Schmidt
Locally probing pairing in fermionic superfluids, ranging from micro- to macroscopic scales, has been a long-standing challenge. Here, we investigate a new approach that uses Rydberg impurities as a spectroscopic sensor of the surrounding strongly correlated state of ultracold paired fermions. The e… [Phys. Rev. Lett. 136, 243401] Published Tue Jun 16, 2026
