Synthetic electromagnetic knot in a three-dimensional skyrmion

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal
View/Open full text file from the Research portal
Date
2018-03-02
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-7
Series
Science Advances, Volume 4, issue 3
Abstract
Classical electromagnetism and quantum mechanics are both central to the modern understanding of the physical world and its ongoing technological development. Quantum simulations of electromagnetic forces have the potential to provide information about materials and systems that do not have conveniently solvable theoretical descriptions, such as those related to quantum Hall physics, or that have not been physically observed, such as magnetic monopoles. However, quantum simulations that simultaneously implement all of the principal features of classical electromagnetism have thus far proved elusive. We experimentally realize a simulation in which a charged quantum particle interacts with the knotted electromagnetic fields peculiar to a topological model of ball lightning. These phenomena are induced by precise spatiotemporal control of the spin field of an atomic Bose-Einstein condensate, simultaneously creating a Shankar skyrmion—a topological excitation that was theoretically predicted four decades ago but never before observed experimentally. Our results reveal the versatile capabilities of synthetic electromagnetism and provide the first experimental images of topological three-dimensional skyrmions in a quantum system.
Description
Keywords
Other note
Citation
Lee , W , Gheorghe , A H , Tiurev , K , Ollikainen , T , Möttönen , M & Hall , D S 2018 , ' Synthetic electromagnetic knot in a three-dimensional skyrmion ' , Science Advances , vol. 4 , no. 3 , eaao3820 , pp. 1-7 . https://doi.org/10.1126/sciadv.aao3820