Decoherence free subspaces of a quantum Markov semigroup
Julián Agredo, Franco Fagnola, Rolando Rebolledo · Journal of Mathematical Physics · 2014
We give a full characterisation of decoherence free subspaces of a given quantum Markov semigroup with generator in a generalised Lindbald form which is valid also for infinite-dimensional systems. Our results, extending those available in the literature concerning finite-dimensional systems, are illustrated by some examples.