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 …

Subnanokelvin thermometry of an interacting -dimensional homogeneous Bose gas

MM Khan, M Mehboudi, H Terças, M Lewenstein… - Physical Review …, 2022 - APS
We propose experimentally feasible means for nondestructive thermometry of
homogeneous Bose-Einstein condensates in different spatial dimensions (d∈{1, 2, 3}). Our …

Quantum sensing of temperature close to absolute zero in a Bose-Einstein condensate

JB Yuan, B Zhang, YJ Song, SQ Tang, XW Wang… - Physical Review A, 2023 - APS
We propose a theoretical scheme for quantum sensing of temperature close to absolute zero
in a quasi-one-dimensional Bose-Einstein condensate (BEC). In our scheme, a single-atom …

Non-Markovian enhanced temperature sensing in a dipolar Bose-Einstein condensate

L Xu, JB Yuan, SQ Tang, W Wu, QS Tan, LM Kuang - Physical Review A, 2023 - APS
We present a method for implementing quantum temperature sensing for extremely low
temperatures in a quasi-1D dipolar Bose-Einstein condensate reservoir with a magnetic field …

Slow dynamics of a mobile impurity interacting with an Anderson insulator

P Sierant, T Chanda, M Lewenstein, J Zakrzewski - Physical Review B, 2023 - APS
We investigate dynamics of a single mobile impurity immersed in a bath of Anderson
localized particles and focus on the regime of relatively strong disorder and interactions. In …

Quasiparticle nature of the Bose polaron at finite temperature

G Pascual, J Boronat - Physical review letters, 2021 - APS
The Bose polaron has attracted theoretical and experimental interest because the mobile
impurity is surrounded by a bath that undergoes a superfluid-to-normal phase transition …

Non-Markovian temperature sensing

ZZ Zhang, W Wu - Physical Review Research, 2021 - APS
We investigate the sensing performance of a single-qubit quantum thermometer within a non-
Markovian dynamical framework. By employing an exactly numerical hierarchical equations …

Polaron Dynamics in a Quasi-Two-Dimensional Bose–Einstein Condensate

SN Mardonov, BA Toshmatov, BJ Ahmedov… - Universe, 2023 - mdpi.com
The concept of polaron quasiparticles was first introduced in the pioneering papers by
Landau and Feynman in the 1930s and 1940s. It describes the phenomenon of an external …

Nonergodic dynamics for an impurity interacting with bosons in a tilted lattice

PRN Falcão, J Zakrzewski - Physical Review B, 2023 - APS
The fate of a single particle immersed in and interacting with a bath of other particles
localized in a tilted lattice is investigated. For tilt values comparable to the tunneling rate a …

Tailoring Bose-Einstein-condensate environments for a Rydberg impurity

S Rammohan, AK Chauhan, R Nath, A Eisfeld… - Physical Review A, 2021 - APS
Experiments have demonstrated that the excitation of atoms embedded in a Bose-Einstein
condensate to Rydberg states is accompanied by phonon creation. Here we provide the …