Non Local Noise by Applying Localized Noise to Entangled States

Emmi Herterich

Sudden Death of Entanglement for non-locality and concurrence : A review of entanglement sudden death behaviour of non-locality and concurrence in commonly used entangled state classes under inuence of decay and dephasing noise dynamics

Eugene V. Sukhorukov, Daniel Loss, Guido Burkard

Yaroslav M. Blanter, Yuval Gefen

Pedro Ornelas, Isaac M. Nape, Robert de Mello Koch +1 more

Entangled states are a promising resource for many quantum technologies, however they are highly susceptible to noise. Here we identify non-local topological features of entangled states which are robust to noise.

Yan Xia, Linlin Fan, Si-Yang Hao +4 more

Odette Melachio Tiokang, Fridolin Tchangnwa Nya, Jaures Diffo Tchinda +2 more

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.