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  • Open Access

Dissipation engineering of fermionic long-range order beyond the Lindblad limit

Silvia Neri

François Damanet

Andrew J. Daley

Maria Luisa Chiofalo

Jorge Yago Malo

  • Institut de Physique Nucléaire, Atomique et de Spectroscopie, CESAM, Université de Liège, 4000 Liège, Belgium

  • Dipartimento di Fisica “Enrico Fermi” and INFN, University of Pisa, Italy

  • Dipartimento di Fisica “Enrico Fermi” and INFN, University of Pisa, Pisa, Italy

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Phys. Rev. B 113, 134514 – Published 13 April, 2026

DOI: https://doi.org/10.1103/p8n2-jzgh

Abstract

We investigate the possibility of engineering dissipatively long-range order that is robust against heating in strongly interacting fermionic systems, relevant for atoms in cavity QED. It was previously shown [Tindall et al. Phys. Rev. Lett. 123, 030603 (2019)] that it is possible to stabilize long-range order in a Hubbard model by exploiting a dissipative mechanism in the Lindblad limit, this latter being valid for spectrally unstructured baths. Here, we first show that this mechanism still holds when including additional spin-exchange interactions in the model, that is, for the tUJ model. Moreover, by means of a Redfield approach that goes beyond the Lindblad case, we show how the stability of the engineered state depends crucially on properties of the bath spectral density and discuss the feasibility of those properties in an experiment.

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Phys. Rev. B 113, 134514– Published 13 April, 2026
  • Received 14 July 2025
  • Revised 3 March 2026
  • Accepted 12 March 2026
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