Bose-Einstein Condensation 2023

Spectroscopy and Emergent Order in an Ultracold Mixture of 87Rb-40K

13 Sept 2023, 21:00

2h

Hotel Eden Roc

Poster Long-range Interactions and Rydberg Systems Poster Session III

Speaker

Prof. Nir Davidson (weizmann institute)

Description

We employ spectroscopic tools to study interactions and emergent order in an ultracold mixture of a Bose-Einstein Condensate (BEC) and spin-polarized Degenerate Fermi Gas (DFG). We characterized the effect of fermion-mediated interaction on the boson clock transition [1]. We now extend our work by tuning the fermion-mediated effect on the Bogoliubov excitation spectrum through a Feshbach resonance, where we expect a stable mixture on the attractive side of the resonance [2]. We also measured spin-squeezing effects in a bosonic spin mixture due to weak non-linear intraspecies interactions, enhanced by a Dynamic Decoupling (DD) scheme [3]. Our system is a rich playground to study controlled many-body physics.
[1] H. Edri, B. Raz , N. Matzliah, N. Davidson, and R. Ozeri, Phys. Rev. Lett. 124, 163401 (2020).
[2] K. Patel, G. Cai, H. Ando, and C. Chin, arXiv:2205.14518v1.
[3] H. Edri, B. Raz , G. Fleurov, R. Ozeri, and N. Davidson, New J. Phys. 23 053005 (2021).