Dipolar physics: a review of experiments with magnetic quantum gases

L Chomaz, I Ferrier-Barbut, F Ferlaino… - Reports on Progress …, 2022‏ - iopscience.iop.org
Since the achievement of quantum degeneracy in gases of chromium atoms in 2004, the
experimental investigation of ultracold gases made of highly magnetic atoms has …

Universal many-body response of heavy impurities coupled to a Fermi sea: A review of recent progress

R Schmidt, M Knap, DA Ivanov, JS You… - Reports on Progress …, 2018‏ - iopscience.iop.org
In this report we discuss the dynamical response of heavy quantum impurities immersed in a
Fermi gas at zero and at finite temperature. Studying both the frequency and the time …

Measuring the scrambling of quantum information

B Swingle, G Bentsen, M Schleier-Smith, P Hayden - Physical Review A, 2016‏ - APS
We provide a general protocol to measure out-of-time-order correlation functions. These
correlation functions are of broad theoretical interest for diagnosing the scrambling of …

Mediated interactions between Fermi polarons and the role of impurity quantum statistics

C Baroni, B Huang, I Fritsche, E Dobler, G Anich… - Nature Physics, 2024‏ - nature.com
The notion of quasi-particles is essential for understanding the behaviour of complex many-
body systems. A prototypical example of a quasi-particle is a polaron, formed by an impurity …

Repulsive Fermi Polarons in a Resonant Mixture of Ultracold Atoms

F Scazza, G Valtolina, P Massignan, A Recati, A Amico… - Physical review …, 2017‏ - APS
We employ radio-frequency spectroscopy to investigate a polarized spin mixture of ultracold
Li 6 atoms close to a broad Feshbach scattering resonance. Focusing on the regime of …

Ultrafast many-body interferometry of impurities coupled to a Fermi sea

M Cetina, M Jag, RS Lous, I Fritsche, JTM Walraven… - Science, 2016‏ - science.org
The fastest possible collective response of a quantum many-body system is related to its
excitations at the highest possible energy. In condensed matter systems, the time scale for …

[HTML][HTML] Repulsive Fermi and Bose polarons in quantum gases

F Scazza, M Zaccanti, P Massignan, MM Parish… - Atoms, 2022‏ - mdpi.com
Polaron quasiparticles are formed when a mobile impurity is coupled to the elementary
excitations of a many-particle background. In the field of ultracold atoms, the study of the …

Non-equilibrium quantum dynamics and formation of the Bose polaron

MG Skou, TG Skov, NB Jørgensen, KK Nielsen… - Nature Physics, 2021‏ - nature.com
Advancing our understanding of non-equilibrium phenomena in quantum many-body
systems remains one of the greatest challenges in physics. Here we report on the …

Quantum dynamics of ultracold Bose polarons

YE Shchadilova, R Schmidt, F Grusdt, E Demler - Physical review letters, 2016‏ - APS
We analyze the dynamics of Bose polarons in the vicinity of a Feshbach resonance between
the impurity and host atoms. We compute the radio-frequency absorption spectra for the …

In Situ Thermometry of a Cold Fermi Gas via Dephasing Impurities

MT Mitchison, T Fogarty, G Guarnieri, S Campbell… - Physical Review Letters, 2020‏ - APS
The precise measurement of low temperatures is a challenging, important, and fundamental
task for quantum science. In particular, in situ thermometry is highly desirable for cold atomic …