Periodicity in Ergodic Quantum Processes

We study the periodic properties of sequences of quantum channels sampled from an ergodic stochastic process satisfying a natural irreducibility condition. We relate these periodic properties to certain global spectral data defined by the sequence of quantum channels, proving a general Perron-Frobenius-type theorem. We give examples to motivate the theory and conclude with some open problems and conjectures. --- Source: arXiv:2604.09422v1 - http://arxiv.org/abs/2604.09422v1 PDF: https://arxiv.or...