Cited by 179Quantum Mechanics and Non-Hermitian PhysicsTopological Materials and PhenomenaAcoustic Wave Phenomena Research

Experimental band structure spectroscopy along a synthetic dimension

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Dutt, Avik, Minkov, Momchil, Lin, Qian, Yuan, Luqi, Miller, David A. B., Fan, Shanhui·2019·Nature Communications

Abstract

There has been significant recent interest in synthetic dimensions, where internal degrees of freedom of a particle are coupled to form higher-dimensional lattices in lower-dimensional physical structures. For these systems, the concept of band structure along the synthetic dimension plays a central role in their theoretical description. Here we provide a direct experimental measurement of the band structure along the synthetic dimension. By dynamically modulating a resonator at frequencies commensurate with its mode spacing, we create a periodically driven lattice of coupled modes in the frequency dimension. The strength and range of couplings can be dynamically reconfigured by changing the modulation amplitude and frequency. We show theoretically and demonstrate experimentally that time-resolved transmission measurements of this system provide a direct readout of its band structure. We also realize long-range coupling, gauge potentials and nonreciprocal bands by simply incorporating additional frequency drives, enabling great flexibility in band structure engineering.

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Crossref · 10.1038/s41467-019-11117-9

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  • If such a closed loop in the Brillouin zone encircles a Dirac point, the winding of the trajectory can be associated with the topological charge of the Dirac point.

    “If such a closed loop in the Brillouin zone encircles a Dirac point, the winding of the trajectory can be associated with the topological charge of the Dirac point [44,45].”

    From Non-Abelian lattice gauge fields in photonic synthetic frequency dimensions (2025) · cites this paper as [45]

    The Results > Theory section describes Bloch quasimomentum and Floquet band-structure measurements, while Results > Experimental results discusses a Brillouin zone and synthetic gauge potentials; page numbers are unavailable in our copy. Searches for Dirac points, winding, closed loops, and topological charge found no passage connecting a loop around a Dirac point to its charge. (LLM, conf=0.76)

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Authors
Dutt, A., Minkov, M., Lin, Q., Yuan, L., Miller, D. A. B., & Fan, S.
Affiliations
  • Stanford University (US)
  • Shanghai Jiao Tong University (CN)
Corresponding author
  • Yuan, Luqi
  • Fan, Shanhui
Venue
Nature Communications
Published
2019-07-16
Volume
10
Issue
1
Pages
3122-3122
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2951236500
Cited by
178
References
75
Citations by year
2026: 22 · 2025: 37 · 2024: 23 · 2023: 21 · 2022: 17 · 2021: 30 · 2020: 22 · 2019: 5 · 2018: 1
FWCI
8.13
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion, cc-by-nc-sa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • arXiv (Cornell University)
Funders
  • United States Department of Defense | United States Navy | Office of Naval Research (N00014-17-1-3030)
  • United States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific Research (FA9550-17-1-0002)
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (P300P2_177721)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Non-Hermitian Physics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
  • Physical Sciences › Engineering › Biomedical Engineering › Acoustic Wave Phenomena Research
Keywords
synthetic dimensions, electronic band structure, long-range coupling, gauge potential, band structure engineering

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