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This research was supported by the US Army Research Office (ARO) grant W911NF-18-1-0212. M.H. acknowledges partial support from the ARO (W911NF-18-1-0020). S.D. acknowledges partial support from the ARO (W911NF-16-10349). The view and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the ARO or the US government. The US government is authorized to reproduce and distribute reprints for government purposes notwithstanding any copyright notation herein. D.B. acknowledges support by the Netherlands Organisation for Scientific Research (NWO) and Microsoft Corporation Station Q. J.C. acknowledges the support from MICINN (Spain) ("Beatriz Galindo" Fellowship BEAGAL18/00081). J.N. acknowledges support from the Danish National Research Foundation. Some of the authors acknowledge the European Union's Horizon 2020 research and innovation program for financial support; A.G received funding from the European Research Council, grant 804988 (SiMS); and A.G., A.L.Y., J.C., and J.N. further acknowledge grant 828948 (AndQC) and QuantERA project 127900(SuperTOP). A.L.Y. acknowledges support by Spanish MICINN through grants FIS2017-84860-R and through the "Mar ' ia de Maeztu" Programme for Units of Excellence in R&D (grant MDM-2014-0377).

Analysis of institutional authors

Levy-Yeyati Mizrahi, AlfredoAuthor

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August 16, 2021
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Article
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Coherent manipulation of an Andreev spin qubit

Publicated to:SCIENCE. 373 (6553): 430-+ - 2021-07-23 373(6553), DOI: 10.1126/science.abf0345

Authors: Hays, M; Fatemi, V; Bouman, D; Cerrillo, J; Diamond, S; Serniak, K; Connolly, T; Krogstrup, P; Nygard, J; Yeyati, A Levy; Geresdi, A; Devoret, M H

Affiliations

Chalmers Univ Technol, Quantum Device Phys Lab, Dept Microtechnol & Nanosci, SE-41296 Gothenburg, Sweden - Author
Delft Univ Technol, Kavli Inst Nanosci, NL-2600 GA Delft, Netherlands - Author
Delft Univ Technol, NL-2600 GA Delft, Netherlands - Author
MIT, Lincoln Lab, 244 Wood St, Lexington, MA 02420 USA - Author
QuTech, NL-2600 GA Delft, Netherlands - Author
Univ Autanoma Madrid, Dept Fis Teor Mat Condensada CV, E-28049 Madrid, Spain - Author
Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC, E-28049 Madrid, Spain - Author
Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain - Author
Univ Copenhagen, Ctr Quantum Devices, Niels Bohr Inst, Univ Pk 5, DK-2100 Copenhagen, Denmark - Author
Univ Politecn Cartagena, Area Fis Aplicada, E-30202 Cartagena, Spain - Author
Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA - Author
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Abstract

Two promising architectures for solid-state quantum information processing are based on electron spins electrostatically confined in semiconductor quantum dots and the collective electrodynamic modes of superconducting circuits. Superconducting electrodynamic qubits involve macroscopic numbers of electrons and offer the advantage of larger coupling, whereas semiconductor spin qubits involve individual electrons trapped inmicroscopic volumes but aremore difficult to link. We combined beneficial aspects of both platforms in the Andreev spin qubit: the spin degree of freedom of an electronic quasiparticle trapped in the supercurrent-carrying Andreev levels of a Josephson semiconductor nanowire. We performed coherent spin manipulation by combining single-shot circuit-quantum-electrodynamics readout and spin-flipping Raman transitions and found a spin-flip time T-S = 17microseconds and a spin coherence time T-2E = 52 nanoseconds. These results herald a regime of supercurrent-mediated coherent spin-photon coupling at the single-quantum level.

Keywords

PhotonQuantumStates

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal SCIENCE due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2021, it was in position 2/74, thus managing to position itself as a Q1 (Primer Cuartil), in the category Multidisciplinary Sciences. Notably, the journal is positioned above the 90th percentile.

This publication has been distinguished as a “Highly Cited Paper” by the agencies WoS (ESI, Clarivate) and ESI (Clarivate), meaning that it ranks within the top 1% of the most cited articles in its thematic field during the year of its publication. In terms of the observed impact of the contribution, this work is considered one of the most influential worldwide, as it is recognized as highly cited. (source consulted: ESI Nov 14, 2024)

And this is evidenced by the extremely high normalized impacts through some of the main indicators of this type, which, although dynamic over time and dependent on the set of average global citations at the time of calculation, already indicate that they are well above the average in different agencies:

  • Normalization of citations relative to the expected citation rate (ESI) by the Clarivate agency: 7.81 (source consulted: ESI Nov 14, 2024)
  • Weighted Average of Normalized Impact by the Scopus agency: 31.22 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 47.96 (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-05, the following number of citations:

  • WoS: 108
  • Scopus: 128
  • Europe PMC: 16

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 2025-07-05:

  • 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: 142.
  • 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: 143 (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: 46.2.
  • The number of mentions on the social network X (formerly Twitter): 36 (Altmetric).
  • The number of mentions in news outlets: 3 (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: Denmark; Netherlands; Sweden; United States of America.