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Dark-state phase transition to a dark soliton in a dissipative Bose-Hubbard chain

Year: 2026
Type: article
Abstract: We show that a Bose-Hubbard model with local loss exhibits a first-order dark-state phase transition between a dark soliton and a uniform superfluid. Semiclassical simulations and stability analysis reveal that the soliton acts as a many-body dark state, whose suppressed fluctuations modify the transition relative to the comparable phenomenon of optical bistability in Kerr resonators. This mechanism quantitatively captures the bistable phase boundary observed in the experiment of Labouvie [], resolving long-standing discrepancies in previous theoretical modeling. Our results identify a general route by which spatial coherence and engineered loss can generate nonequilibrium phase transitions in ultracold gases.
DOI: 10.1103/dv77-31g7
Institutions: University of Antwerp, Oklahoma State University, The University of Texas at Dallas, Asia Pacific Center for Theoretical Physics, Australian Research Council, The University of Queensland, ARC Centre of Excellence in Future Low-Energy Electronics Technologies
Language: English
Open Access status: gold
Estimated APC paid: $2,625
Funders: National Science Foundation, Vlaams Supercomputer Centrum, Fonds Wetenschappelijk Onderzoek, Vlaamse regering, Australian Research Council, Centre of Excellence in Future Low-Energy Electronics Technologies, Australian Research Council
OpenAlex ID: W4416358368
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Cites: 64
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Related to: 10