A direct method for analysis and synthesis of a decoherence-free mode in quantum linear systems
Yu Liang Pan, Daoyi Dong, Ian R. Petersen · 2016
A decoherence-free mode lies at the heart of the preservation of quantum information against external noise. In this paper we propose a direct method for the analysis and synthesis of a decoherence-free mode in quantum linear systems. First, we derive a necessary condition for the existence of a decoherence-free mode. Then, the synthesis of the decoherence-free mode via Hamiltonian control is discussed.