Exceptional points in non-Hermitian Hamiltonians correspond to multi-block exceptional points in the no-jump Liouvillian; quantum jump terms modify the block structure, demonstrated in qubit and qutrit models with population sinks.
Trampus, A canonical basis for the matrix transfor- mation x→ax + xb, Journal of Mathematical Analysis and Applications14, 242 (1966)
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Multi-block exceptional points in open quantum systems
Exceptional points in non-Hermitian Hamiltonians correspond to multi-block exceptional points in the no-jump Liouvillian; quantum jump terms modify the block structure, demonstrated in qubit and qutrit models with population sinks.