Completely positive non-Markovian decoherence

Jinhyoung Lee, Inbo Kim, Doyeol Ahn, Helen McAneney, M. S. Kim

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


The effective hamiltonian approach was proposed to investigate the non-Markovian decoherence of an open system and to understand the characteristics of its environment. The formalism was based on the notion of an effective environment that were responsible for the decoherence. The approach was appllied to the dephasing, depolarizing and amplitude-damping processes. It was found that the non-Markovian environment suppresses the decoherence of the qubit, due to the memory effect of the non-Markovian environment.

Original languageEnglish
Article number024301
Pages (from-to)024301-1-024301-4
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number2
StatePublished - Aug 2004


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