TY - JOUR
T1 - Non-Markovian decoherence
T2 - Complete positivity and decomposition
AU - McAneney, H.
AU - Lee, J.
AU - Ahn, D.
AU - Kim, M. S.
PY - 2005/5/10
Y1 - 2005/5/10
N2 - In this work, the non-Markovian decoherence is considered in two ways. Firstly, an effective Hamiltonian approach is demonstrated to investigate the decoherence of a quantum system in a non-Markovian environment, in which complete positivity of the reduced dynamics is achieved. This method uses the notion of an effective environment, that is a subsystem of the environment that causes the decoherence. Secondly, the evolution of the system and environment is decomposed, thus partially illuminating how they would interact given that memory effects are allowed. It should be noted that beam splitters and rotators are sufficient to explain this decomposition.
AB - In this work, the non-Markovian decoherence is considered in two ways. Firstly, an effective Hamiltonian approach is demonstrated to investigate the decoherence of a quantum system in a non-Markovian environment, in which complete positivity of the reduced dynamics is achieved. This method uses the notion of an effective environment, that is a subsystem of the environment that causes the decoherence. Secondly, the evolution of the system and environment is decomposed, thus partially illuminating how they would interact given that memory effects are allowed. It should be noted that beam splitters and rotators are sufficient to explain this decomposition.
UR - http://www.scopus.com/inward/record.url?scp=27944498585&partnerID=8YFLogxK
U2 - 10.1080/09500340512331337876
DO - 10.1080/09500340512331337876
M3 - Article
AN - SCOPUS:27944498585
SN - 0950-0340
VL - 52
SP - 935
EP - 943
JO - Journal of Modern Optics
JF - Journal of Modern Optics
IS - 7
ER -