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Grant support

M.B. and J.I.C. acknowledge funding from the ERC Advanced Grant QUENOCOBA under the EU Horizon 2020 program (Grant Agreement No. 742102).

Analysis of institutional authors

Bello, MiguelCorresponding Author

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Article

Topological effects in two-dimensional quantum emitter systems

Publicated to:PHYSICAL REVIEW B. 107 (5): 054301- - 2023-02-01 107(5), DOI: 10.1103/PhysRevB.107.054301

Authors: Bello, Miguel; Cirac, Ignacio

Affiliations

Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany - Author
Munich Ctr Quantum Sci & Technol, Schellingstr 4, D-80799 Munich, Germany - Author

Abstract

In this work, we show how novel topological effects appear when considering arrangements of increasing complexity of quantum emitters coupled to two-dimensional bosonic topological insulators. For a single emitter coupled to the Haldane model, we find a "fragile" quasibound state that makes the emitter dynamics very sensitive to the model's parameters and gives rise to effective long-range interactions that break time-reversal symmetry. We then discuss one-dimensional arrangements of emitters, emitter line defects, and how the topology of the bath affects the effective polariton models that appear in the weak-coupling regime when the emitters are spectrally tuned to a band gap. In the Harper-Hofstadter model, we link the nonmonotonic character of the effective interactions to the Chern numbers of the surrounding energy bands, while in the Haldane model, we show that the effective models are either gapless or not depending on the topology of the bath. Last, we discuss how the presence of emitters forming an ordered array, an emitter superlattice, can produce polariton models with nontrivial Chern numbers, and also modify the topology of the photonic states in the bath.

Keywords

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 5.05, 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: Dimensions Jun 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-06-17, the following number of citations:

  • WoS: 5
  • Scopus: 7
  • OpenCitations: 3

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 2025-06-17:

  • 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: 9.
  • 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: 9 (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: 6.05.
  • The number of mentions on the social network X (formerly Twitter): 10 (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: Germany.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (BELLO GAMBOA, MIGUEL) .

the author responsible for correspondence tasks has been BELLO GAMBOA, MIGUEL.