Sudden Transition between Classical and Quantum Decoherence



: Mazzola L, Piilo J, Maniscalco S

Publisher: AMER PHYSICAL SOC

: 2010

: Physical Review Letters

: PHYSICAL REVIEW LETTERS

: PHYS REV LETT

: ARTN 200401

: 20

: 104

: 20

: 4

: 0031-9007

DOI: https://doi.org/10.1103/PhysRevLett.104.200401


We study the dynamics of quantum and classical correlations in the presence of nondissipative decoherence. We discover a class of initial states for which the quantum correlations, quantified by the quantum discord, are not destroyed by decoherence for times t < <(t)over bar>. In this initial time interval classical correlations decay. For t > (t) over bar, on the other hand, classical correlations do not change in time and only quantum correlations are lost due to the interaction with the environment. Therefore, at the transition time (t) over bar the open system dynamics exhibits a sudden transition from classical to quantum decoherence regime.



Last updated on 2024-26-11 at 21:18