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Quantum State Preparation Representation

The superradiant phase is a finite size effect in two-photon processes

arXiv
Authors: Fabrizio Ramírez, David Villaseñor, Nahum Vázquez, Jorge G. Hirsch

Year

2026

Paper ID

3241

Status

Preprint

Abstract Read

~2 min

Abstract Words

90

Citations

N/A

Abstract

Two-photon light-matter interactions exhibit distinctive features such as spectral collapse. The two-photon Dicke model has been reported to exhibit a superradiant phase which could be useful in quantum applications. Here we show that this superradiant phase is not a genuine thermodynamic phase but a finite-size effect. Combining analytical and numerical analyses, we demonstrate that the superradiant region shrinks with increasing system size and disappears in the thermodynamic limit, while spectral collapse remains. Our results clarify the nature of superradiant conditions in two-photon systems and constrain its realization in quantum platforms.

Why This Paper Matters

  • This paper contributes to the Quantum State Preparation & Representation research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • Two-photon light-matter interactions exhibit distinctive features such as spectral collapse.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2601.19986 [2] arXiv https://arxiv.org/abs/2601.19986 [3] Publisher https://arxiv.org/abs/2601.19986

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