Completely positive non-Markovian decoherence

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

doi:10.1103/PhysRevA.70.024301

Completely positive non-Markovian decoherence

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

School of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

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 language	English
Article number	024301
Pages (from-to)	024301-1-024301-4
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	70
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.70.024301
State	Published - Aug 2004

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Completely positive non-Markovian decoherence

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