6 papers
Microscopy of cavity-induced density-wave ordering in ultracold gases
Tabea Bühler, Aurélien Fabre, Gaia Bolognini +4
We demonstrate high-resolution in-situ imaging of density-wave ordering induced by cavity-mediated interactions in a unitary Fermi gas. We observe long-range spatial correlations t…
An efficient high-current circuit for fast radio-frequency spectroscopy in cold atomic gases
F. Scazza, G. Del Pace, L. Pieri +3
We design and implement a low-impedance, high-current radio-frequency (RF) circuit, enabling fast coherent coupling between magnetic levels in cold alkali atomic samples. It is bas…
Shapiro steps in strongly-interacting Fermi gases
Giulia Del Pace, Diego Hernández-Rajkov, Vijay Pal Singh +7
We report the observation of Shapiro steps in a periodically driven Josephson junction between strongly-interacting Fermi superfluids of ultracold atoms. We observe quantized plate…
Measuring mutual friction in superfluids: the role of initial vortex configuration fluctuations
Nicola Grani, Diego Hernández-Rajkov, Marcia Frómeta Fernández +2
The physical origin of mutual friction in quantum fluids is deeply connected to the fundamental nature of superfluidity. It stems from the interaction between the superfluid and no…
Cavity-mediated charge and pair-density waves in a unitary Fermi gas
Timo Zwettler, Filip MarijanoviÄ, Tabea Bühler +7
Coherent light-matter interactions between a quantum gas and light in a high-finesse cavity can drive self-ordering phase transitions. To date, such phenomena have involved exclusi…
Direct production of fermionic superfluids in a cavity-enhanced optical dipole trap
Tabea Bühler, Timo Zwettler, Gaia Bolognini +4
We present the production of quantum degenerate, superfluid gases of Li through direct evaporative cooling in a cavity-enhanced optical dipole trap. The entire evaporative cool…