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Analysis of institutional authors

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May 1, 2018
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Vortex and half-vortex dynamics in a nonlinear spinor quantum fluid

Publicated to:Science Advances. 1 (11): 467- - 2015-12-01 1(11), DOI: 10.1126/sciadv.1500807

Authors: Dominici, Lorenzo; Dagvadorj, Galbadrakh; Fellows, Jonathan M; Ballarini, Dario; De Giorgi, Milena; Marchetti, Francesca M; Piccirillo, Bruno; Marrucci, Lorenzo; Bramati, Alberto; Gigli, Giuseppe; Szymanska, Marzena H; Sanvitto, Daniele

Affiliations

CNR, NANOTEC, Ist Nanotecnol, Via Monteroni, I-73100 Lecce, Italy - Author
CONSIGLIO NAZIONALE DELLE RICERCHE - Author
The University of Warwick - Author
UCL - Author
UCL, Dept Phys & Astron, London WC1E 6BT, England - Author
Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain - Author
Univ Naples Federico II, Dipartimento Fis, I-80126 Naples, Italy - Author
Univ Salento, Dipartimento Matemat & Fis Ennio de Giorgi, I-73100 Lecce, Italy - Author
Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England - Author
Universidad Autónoma de Madrid - Author
Universita degli Studi di Napoli Federico II - Author
Università del Salento - Author
Universite Paris Sorbonne - Paris IV - Author
UPMC Sorbonne Univ, Lab Kastler Brossel, CNRS, ENS PSL,Res Univ,Coll France, F-75005 Paris, France - Author
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Abstract

Vortices are archetypal objects that recur in the universe across the scale of complexity, from subatomic particles to galaxies and black holes. Their appearance is connected with spontaneous symmetry breaking and phase transitions. In Bose-Einstein condensates and superfluids, vortices are both point-like and quantized quasiparticles. We use a two-dimensional (2D) fluid of polaritons, bosonic particles constituted by hybrid photonic and electronic oscillations, to study quantum vortex dynamics. Polaritons benefit from easiness of wave function phase detection, a spinor nature sustaining half-integer vorticity, strong nonlinearity, and tuning of the background disorder. We can directly generate by resonant pulsed excitations a polariton condensate carrying either a full or half-integer vortex as initial condition and follow their coherent evolution using ultrafast imaging on the picosecond scale. The observations highlight a rich phenomenology, such as the spiraling of the half-vortex and the joint path of the twin charges of a full vortex, until the moment of their splitting. Furthermore, we observe the ordered branching into newly generated secondary couples, associated with the breaking of radial and azimuthal symmetries. This allows us to devise the interplay of nonlinearity and sample disorder in shaping the fluid and driving the vortex dynamics. In addition, our observations suggest that phase singularities may be seen as fundamental particles whose quantized events span from pair creation and recombination to 2D+t topological vortex strings.

Keywords

bose einstein condensatesnonlinearitypolaritonsqunatum vorticesBose einstein condensatesNonlinearityPolaritonsQunatum vorticesTopological excitations

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Science Advances, Q4 Agency Scopus (SJR), its regional focus and specialization in Medicine (Miscellaneous), give it significant recognition in a specific niche of scientific knowledge at an international level.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 4.57, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 16.95 (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-04, the following number of citations:

  • WoS: 53
  • Scopus: 63
  • Europe PMC: 6

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-04:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 41.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 63 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 11.982.
  • The number of mentions on the social network Facebook: 1 (Altmetric).
  • The number of mentions on the social network X (formerly Twitter): 3 (Altmetric).
  • The number of mentions on Wikipedia: 5 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: France; Italy; United Kingdom.