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Cited by 14Strong Light-Matter InteractionsPhotonic Crystals and ApplicationsSemiconductor Quantum Structures and Devices

Supersolidity of Polariton Condensates in Photonic Crystal Waveguides

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Nigro, Davide, Trypogeorgos, Dimitrios, Gianfrate, Antonio, Sanvitto, Daniele, Carusotto, Iacopo, Gerace, Dario·2025·Physical Review Letters
DOI 10.1103/physrevlett.134.056002
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Abstract

Condensation of exciton polaritons has been recently observed in gap-confined states of one-dimensional photonic crystal waveguides. Here we focus on the theoretical emergence of a second emission threshold in this platform, in addition to the one associated with condensation at zero momentum, due to the nonlinear polariton scattering from the condensate into finite momentum eigenmodes. The physics of this spatially modulated condensate is related to a spontaneous breaking of both phase and translational symmetries simultaneously, bearing similarities with the highly sought supersolid phase in Helium and ultracold atomic gases but with a novel mechanism typical of the driven-dissipative scenario. We then propose clear-cut and unequivocal experimental signatures that would allow to identify such non-equilibrium supersolidity of polariton condensates.

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  • While the main condensation process occurs at the top of a photonic band, a spatial modulation of the condensate density spontaneously appears as the result of coherent parametric scattering processes into finite wavevector modes in the side photonic bands.

    “While the main condensation process occurs at the top of a photonic band, a spatial modulation of the condensate density spontaneously appears as the result of coherent parametric scattering processes into finite wavevector modes in the side photonic bands.”

    From How to exploit driving and dissipation to stabilize and manipulate quantum many-body states (2025) · cites this paper as [114]

    Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured

  • Quantum fluids of light can simultaneously display long-range coherence and a spontaneously formed spatially periodic density modulation.

    “A presently very active direction of research concerns the realization of quantum fluids of light that simultaneously display a long-range coherence and a spontaneously formed spatially periodic density modulation.This physics has been recently investigated in both theory and experiments [114,115] using devices displaying several photonic bands in the same energy range.”

    From How to exploit driving and dissipation to stabilize and manipulate quantum many-body states (2025) · cites this paper as [114]

    The Summary (page unavailable) proposes a polariton-condensate phase with spontaneously broken phase and translational symmetries and a spatial modulation. It does not establish long-range coherence; instead, it notes possible consequences for long-distance coherence. The claim’s coherence component is therefore stronger than the source supports. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

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Cites

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Cited by

Sorted by citations

Authors
Nigro, D., Trypogeorgos, D., Gianfrate, A., Sanvitto, D., Carusotto, I., & Gerace, D.
Affiliations
  • University of Pavia (IT)
  • Istituto di Nanotecnologia (IT)
  • University of Trento (IT)
Corresponding author
Nigro, Davide
ORCID
Venue
Physical Review Letters
Publisher
American Physical Society (APS)
Published
2025-02-07
Volume
134
Issue
5
Pages
056002-056002
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
DOI
10.1103/physrevlett.134.056002
OpenAlex
W4407239916
Cited by
14
References
2
Citations by year
2026: 9 · 2025: 5
FWCI
5.09
Type
journal article
Language
en
Open access
Licence
Locations
  • Physical Review Letters (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion, cc-by)
  • arXiv (Cornell University) (cc-by)
Funders
  • European Commission
  • Provincia Autonoma di Trento
  • Ministero dell’Istruzione, dell’Università e della Ricerca
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Strong Light-Matter Interactions
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photonic Crystals and Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
Keywords
supersolidity, exciton-polaritons, exciton-polariton condensates, photonic crystal waveguides, spontaneous symmetry breaking, translational symmetry breaking, driven-dissipative systems

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