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Cited by 43Topological Materials and PhenomenaQuantum Mechanics and Non-Hermitian PhysicsOrbital Angular Momentum in Optics

A Perspective on Synthetic Dimensions in Photonics

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Ehrhardt, Max, Weidemann, Sebastian, Maczewsky, Lukas J., Heinrich, Matthias, Szameit, Alexander·2023·Laser & Photonics Reviews
DOI 10.1002/lpor.202200518
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Abstract

The concept of synthetic dimension has recently emerged as a versatile way to overcome limitations in the number of effectively available dimensions by leveraging non‐spatial degrees of freedom to mimic additional geometric ones. In particular, the field of photonics offers a plethora of technological possibilities for controlling photons and their degrees of freedom, such as polarization, frequency, or orbital angular momentum. Consequently, a broad range of higher‐dimensional physical phenomena is already experimentally accessible in lower‐dimensional photonic devices and has been used and celebrated, for instance, for the exploration of topological physics. The field of synthetic dimensions is currently even further boosted due to additional mathematical mapping procedures, which pave the way toward even higher synthetic dimensions or, in the presence of optical nonlinearities, can translate to multi‐particle quantum systems, allowing appealing alternatives for quantum simulation. In this perspective, current experimental approaches for harnessing synthetic dimensions to probe higher‐dimensional physics on various light‐based platforms are summarized and discussed including an outlook on promising future prospects in this field.

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  • Three- and higher-dimensional configurations require synthetic dimension schemes where extra spatial dimensions are encoded in other degrees of freedom of the photon, such as different cavity modes of a ring resonator.

    “three-and higher-dimensional configurations require the use of synthetic dimension schemes where extra spatial dimension are encoded in some other degrees of freedom of the photon, e.g. the different cavity modes of a ring resonator [134][135][136].”

    From How to exploit driving and dissipation to stabilize and manipulate quantum many-body states (2025) · cites this paper as [135]

    Section 2 says photonic devices are typically restricted to 2D for technological reasons and describes using photon degrees of freedom as synthetic dimensions, including ring-resonator modes. The Introduction likewise says nonspatial degrees of freedom can mimic additional geometric dimensions. These passages support the scheme and example, but not the categorical claim that three- and higher-dimensional configurations require it. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

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Cited by

Sorted by citations

Authors
Ehrhardt, M., Weidemann, S., Maczewsky, L. J., Heinrich, M., & Szameit, A.
Affiliations
University of Rostock (DE)
Corresponding author
Szameit, Alexander
ORCID
Venue
Laser & Photonics Reviews
Publisher
Wiley
Published
2023-04-11
Volume
17
Issue
7
ISSN
  • 1863-8880 (ISSN-L)
  • 1863-8899
DOI
10.1002/lpor.202200518
OpenAlex
W4364374873
Cited by
43
References
10
Citations by year
2026: 15 · 2025: 16 · 2024: 10 · 2023: 2
FWCI
4.99
Type
journal article
Language
en
Open access
Licence
Locations
Laser & Photonics Review (publishedVersion, cc-by-nc)
Funders
Deutsche Forschungsgemeinschaft (441234705)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
  • 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 › Orbital Angular Momentum in Optics
Keywords
synthetic dimensions, photonic lattices, polarization, orbital angular momentum, topological photonics, nonlinear optical properties, quantum simulation, higher-dimensional physics

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