Topological quantum matter with cold atoms

DW Zhang, YQ Zhu, YX Zhao, H Yan… - Advances in Physics, 2018 - Taylor & Francis
This is an introductory review of the physics of topological quantum matter with cold atoms.
Topological quantum phases, originally discovered and investigated in condensed matter …

Observation of an Alice ring in a Bose–Einstein condensate

A Blinova, R Zamora-Zamora, T Ollikainen… - Nature …, 2023 - nature.com
Monopoles and vortices are fundamental topological excitations that appear in physical
systems spanning enormous scales of size and energy, from the vastness of the early …

Tying quantum knots

DS Hall, MW Ray, K Tiurev, E Ruokokoski… - Nature physics, 2016 - nature.com
As topologically stable objects in field theories, knots have been put forward to explain
various persistent phenomena in systems ranging from atoms and molecules to cosmic …

Experimental observation of tensor monopoles with a superconducting qudit

X Tan, DW Zhang, W Zheng, X Yang, S Song, Z Han… - Physical Review Letters, 2021 - APS
Monopoles play a center role in gauge theories and topological matter. There are two
fundamental types of monopoles in physics: vector monopoles and tensor monopoles …

Twist of generalized skyrmions and spin vortices in a polariton superfluid

S Donati, L Dominici, G Dagvadorj… - Proceedings of the …, 2016 - National Acad Sciences
We study the spin vortices and skyrmions coherently imprinted into an exciton–polariton
condensate on a planar semiconductor microcavity. We demonstrate that the presence of a …

Spin–orbital-angular-momentum coupled Bose-Einstein condensates

HR Chen, KY Lin, PK Chen, NC Chiu, JB Wang… - Physical Review Letters, 2018 - APS
We demonstrate coupling between the atomic spin-and orbital-angular momentum (OAM) of
the atom's center-of-mass motion in a Bose-Einstein condensate (BEC). The coupling is …

Synthetic electromagnetic knot in a three-dimensional skyrmion

W Lee, AH Gheorghe, K Tiurev, T Ollikainen… - Science …, 2018 - science.org
Classical electromagnetism and quantum mechanics are both central to the modern
understanding of the physical world and its ongoing technological development. Quantum …

Existence, stability, and dynamics of monopole and Alice ring solutions in antiferromagnetic spinor condensates

T Mithun, R Carretero-González, EG Charalampidis… - Physical Review A, 2022 - APS
In this paper. we study the existence, stability, and dynamics of select topological points and
line defects in antiferromagnetic, polar phase, F= 1 Na 23 spinor condensates. Specifically …

Observation of nanoscale magnetic fields using twisted electron beams

V Grillo, TR Harvey, F Venturi, JS Pierce… - Nature …, 2017 - nature.com
Electron waves give an unprecedented enhancement to the field of microscopy by providing
higher resolving power compared to their optical counterpart. Further information about a …

Topological defects in nematic liquid crystals: laboratory of fundamental physics

M Kralj, M Kralj, S Kralj - physica status solidi (a), 2021 - Wiley Online Library
Topological defects (TDs) appear in all branches of physics due to the simplicity of generic
mechanisms: The necessary condition for their existence is spontaneous symmetry breaking …