Dissociation dynamics of singly charged vortices into half-quantum vortex pairs

The quest for identification and understanding of fractional vorticity is a major subject of research in the quantum fluids domain, ranging from superconductors, superfluid Helium-3 to cold atoms. In a two-dimensional Bose degenerate gas with a spin degree of freedom, the fundamental topological exc...

Full description

Saved in:
Bibliographic Details
Main Authors: Manni, F., Lagoudakis, K. G., Liew, Timothy Chi Hin, André, R., Savona, V., Deveaud, B.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2017
Subjects:
Online Access:https://hdl.handle.net/10356/85906
http://hdl.handle.net/10220/43885
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-85906
record_format dspace
spelling sg-ntu-dr.10356-859062023-02-28T19:23:32Z Dissociation dynamics of singly charged vortices into half-quantum vortex pairs Manni, F. Lagoudakis, K. G. Liew, Timothy Chi Hin André, R. Savona, V. Deveaud, B. School of Physical and Mathematical Sciences Vorticity Quantum fluids and solids The quest for identification and understanding of fractional vorticity is a major subject of research in the quantum fluids domain, ranging from superconductors, superfluid Helium-3 to cold atoms. In a two-dimensional Bose degenerate gas with a spin degree of freedom, the fundamental topological excitations are fractional vortical entities, called half-quantum vortices. Convincing evidence for the existence of half-quantum vortices was recently provided in spinor polariton condensates. The half-quantum vortices can be regarded as the fundamental structural components of singly charged vortices but, so far, no experimental evidence of this relation has been provided. Here we report on the direct and time-resolved observation of the dynamical process of the dissociation of a singly charged vortex into its primary components, a pair of half-quantum vortices. The physical origin of the observed phenomenology is found in a spatially inhomogeneous static potential that couples the two spin components of the condensate. Published version 2017-10-16T02:50:42Z 2019-12-06T16:12:27Z 2017-10-16T02:50:42Z 2019-12-06T16:12:27Z 2012 Journal Article Manni, F., Lagoudakis, K. G., Liew, T. C. H., André, R., Savona, V., & Deveaud, B. (2012). Dissociation dynamics of singly charged vortices into half-quantum vortex pairs. Nature Communications, 3, 1309-. https://hdl.handle.net/10356/85906 http://hdl.handle.net/10220/43885 10.1038/ncomms2310 en Nature Communications © 2012 Macmillan Publishers Limited. This paper was published in Nature Communications and is made available as an electronic reprint (preprint) with permission of Macmillan Publishers Limited. The published version is available at: [http://dx.doi.org/10.1038/ncomms2310]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 7 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Vorticity
Quantum fluids and solids
spellingShingle Vorticity
Quantum fluids and solids
Manni, F.
Lagoudakis, K. G.
Liew, Timothy Chi Hin
André, R.
Savona, V.
Deveaud, B.
Dissociation dynamics of singly charged vortices into half-quantum vortex pairs
description The quest for identification and understanding of fractional vorticity is a major subject of research in the quantum fluids domain, ranging from superconductors, superfluid Helium-3 to cold atoms. In a two-dimensional Bose degenerate gas with a spin degree of freedom, the fundamental topological excitations are fractional vortical entities, called half-quantum vortices. Convincing evidence for the existence of half-quantum vortices was recently provided in spinor polariton condensates. The half-quantum vortices can be regarded as the fundamental structural components of singly charged vortices but, so far, no experimental evidence of this relation has been provided. Here we report on the direct and time-resolved observation of the dynamical process of the dissociation of a singly charged vortex into its primary components, a pair of half-quantum vortices. The physical origin of the observed phenomenology is found in a spatially inhomogeneous static potential that couples the two spin components of the condensate.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Manni, F.
Lagoudakis, K. G.
Liew, Timothy Chi Hin
André, R.
Savona, V.
Deveaud, B.
format Article
author Manni, F.
Lagoudakis, K. G.
Liew, Timothy Chi Hin
André, R.
Savona, V.
Deveaud, B.
author_sort Manni, F.
title Dissociation dynamics of singly charged vortices into half-quantum vortex pairs
title_short Dissociation dynamics of singly charged vortices into half-quantum vortex pairs
title_full Dissociation dynamics of singly charged vortices into half-quantum vortex pairs
title_fullStr Dissociation dynamics of singly charged vortices into half-quantum vortex pairs
title_full_unstemmed Dissociation dynamics of singly charged vortices into half-quantum vortex pairs
title_sort dissociation dynamics of singly charged vortices into half-quantum vortex pairs
publishDate 2017
url https://hdl.handle.net/10356/85906
http://hdl.handle.net/10220/43885
_version_ 1759856344078221312