Open AccessInfluence of initial entanglement on entanglement evolution under phase damping channel
Author(s) -
Qigong Liu,
Xin Ji
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.230303
Subject(s) - quantum entanglement , unruh effect , quantum decoherence , physics , sudden death , amplitude damping channel , quantum mechanics , time evolution , squashed entanglement , phase (matter) , quantum , quantum discord , medicine , cardiology
The influence of initial entanglement on entanglement evolution under phase damping channel in noninertial frame is investigated. Compared with the scenario of amplitude damping channel, when the state parameter α has different values with the same intial entanglement, the evolution curves are identical. When the Unruh single particle state has right and left components, there is more serious quantum decoherence than the case where the Unruh single particle state has only right component with the sudden death of entanglement taking place early, and the time of sudden death of entanglement is independent of initial entanglement.