Cold-Atom Elevator: From Edge-State Injection to the Preparation of Fractional Chern Insulators

B Wang, M Aidelsburger, J Dalibard, A Eckardt… - Physical review …, 2024 - APS
Optical box traps offer new possibilities for quantum-gas experiments. Building on their
exquisite spatial and temporal control, we propose to engineer system-reservoir …

Attractive Haldane bilayers for trapping non-Abelian anyons

V Crépel, N Regnault - Physical Review B, 2024 - APS
We study the interplay between intrinsic topological order and superconductivity in a two-
component Haldane bilayer, where the two layers are coupled by an attractive force. We …

Measurable signatures of bosonic fractional Chern insulator states and their fractional excitations in a quantum-gas microscope

B Wang, X Dong, A Eckardt - SciPost Physics, 2022 - scipost.org
The recent progress in engineering topological band structures in optical-lattice systems
makes it promising to study fractional Chern insulator states in these systems. Here we …

Fractional Chern insulators of few bosons in a box: Hall plateaus from center-of-mass drifts and density profiles

C Repellin, J Leonard, N Goldman - Physical Review A, 2020 - APS
Realizing strongly correlated topological phases of ultracold gases is a central goal for
ongoing experiments. While fractional quantum Hall states could soon be implemented in …

Detecting fractional Chern insulators through circular dichroism

C Repellin, N Goldman - Physical review letters, 2019 - APS
Great efforts are currently devoted to the engineering of topological Bloch bands in ultracold
atomic gases. Recent achievements in this direction, together with the possibility of tuning …

Electron-phonon coupling induced topological phase transition in an Haldane-Holstein model

M Islam, K Bhattacharyya, S Basu - Physical Review B, 2024 - APS
We present impelling evidence of topological phase transitions induced by electron-phonon
(e-ph) coupling in an α-T 3 Haldane-Holstein model that facilitates smooth tunability …

Dropping an impurity into a Chern insulator: A polaron view on topological matter

A Camacho-Guardian, N Goldman, P Massignan… - Physical Review B, 2019 - APS
We investigate the properties of an impurity particle interacting with a Fermi gas in a Chern-
insulating state. The interaction leads to the formation of an exotic polaron, which consists of …

Edge mode spectroscopy of fractional Chern insulators

F Binanti, N Goldman, C Repellin - 2023 - hal.science
The exploration of atomic fractional quantum Hall (FQH) states is now within reach in
opticallattice experiments. While bulk signatures have been observed in a system realizing …

Chern numbers for the two-body Hofstadter-Hubbard butterfly

DC Alyuruk, M Iskin - Physical Review B, 2024 - APS
We analyze the two-body spectrum within the Hofstadter-Hubbard model on a square lattice
through an exact variational ansatz and study the topological properties of its low-lying two …

Realization of a Laughlin state of two rapidly rotating fermions

P Lunt, P Hill, J Reiter, PM Preiss, M Gałka… - arXiv preprint arXiv …, 2024 - arxiv.org
We realize a Laughlin state of two rapidly rotating fermionic atoms in an optical tweezer. By
utilizing a single atom and spin resolved imaging technique, we sample the Laughlin …