Numerical evolution of the BBH model with controlled gain shows stable lasing modes are set by topological corner and edge states, with new ratios τ1, τ2, and χ that jump at phase transitions when the hopping ratio γ/λ is varied.
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Nonlinear topological laser based on multipole insulators
Numerical evolution of the BBH model with controlled gain shows stable lasing modes are set by topological corner and edge states, with new ratios τ1, τ2, and χ that jump at phase transitions when the hopping ratio γ/λ is varied.