Effects of colored noise on the dynamics of quantum entanglement of a one-parameter qubit-qutrit system  

作　　者：Odette Melachio Tiokang Fridolin Nya Tchangnwa Jaures Diffo Tchinda Arthur Tsamouo Tsokeng Martin Tchoffo 

机构地区：[1]Research Unit of Condensed Matter,Electronic and Signal Processing,Department of Physics,Dschang School of Sciences and Technology,University of Dschang,PO Box:67 Dschang,Cameroon [2]Material Science Research Group,Physics Laboratory,Department of Physics,Post Graduate School,University of Maroua,PO Box:814 Maroua,Cameroon [3]Centre d’Etudes et de Recherches en Agronomie et en Biodiversite,Faculte d’Agronomie et des Sciences Agricoles,Universite de Dschang,Cameroun

出　　处：《Chinese Physics B》2022年第5期141-149,共9页中国物理B（英文版）

摘　　要：We analyzed the effect of colored noise on the negativity dynamics of a hybrid system consisting of a qubit-qutrit and not interacting,prepared from the start in an entangled one-parameter state and acting with noise in local and non-local environments.In this pink and brown noise we investigated two different situations:in the first situation,the noise is produced by a bistable oscillator with an unknown exchange rate;however,in the second situation,the noise is generated by a set of bistable oscillators.We found that entanglement decreases with time to zero,and undergoes the phenomenon of sudden death and rebirth.The pink noise is more prone to entanglement than the brown noise and the non-local environment is more prone to entanglement than the local one.When the number of fluctuators is increased,entanglement decays faster and finally,for certain parameters of the initial state,the subsystems are not affected by the noise.

关 键 词：ENTANGLEMENT hybrid system QUTRIT colored noise 

分 类 号：O413[理学—理论物理]