Speaker
Tabea Nelly Clara Buehler
(Ecole Polytechnique Fédérale de Lausanne, Institute of Physics, CH-1015 Lausanne, Switzerland)
Description
Quantum gas experiments provide the unique opportunity to study complex quantum many-body systems. Starting from a dilute gas non-local, all-to-all interactions can be implemented by means of a high-finesse optical cavity.
In our experiment we prepare a degenerate, strongly interacting Fermi gas of Li 6 atoms trapped inside a high-finesse optical cavity. We induce long-range atom-atom, atom-pair and pair-to-pair interactions mediated by cavity photons. We observe a density-wave ordering phase transition in the presence of these interactions, suggesting a pair-density-wave state of the gas. We characterize the transition threshold and the lifetime of this state as we vary the strength and sign of the long-range interactions.
Author
Tabea Nelly Clara Buehler
(Ecole Polytechnique Fédérale de Lausanne, Institute of Physics, CH-1015 Lausanne, Switzerland)
Co-authors
Mr
Timo Zwettler
(Ecole Polytechnique Fédérale de Lausanne, Institute of Physics, CH-1015 Lausanne, Switzerland)
Dr
Giulia Del Pace
(Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO) and European Laboratory for Nonlinear Spectroscopy (LENS), University of Florence, 50019 Sesto Fiorentino, Italy)
Jean-Philippe Brantut
(EPFL)
