Cut Noise.
Work Quantum.

This paper establishes a mathematical framework to identify topological edge modes in non-Hermitian systems under periodic driving, specifically when the system is at a critical phase transition point.

Understanding how topological states survive criticality is vital for developing stable quantum technologies, such as topological lasers or robust quantum memory. For professionals, this framework provides a toolset to characterize non-equilibrium open systems where energy gain and loss (non-Hermiticity) and time-dependent driving (Floquet) coexist.