On dynamical behavior of two-junction interferometers in presence of colored noises.

Roberto De Luca, Aniello Fedullo, В. А. Гасаненко

Roberto De Luca, Aniello Fedullo, В. А. Гасаненко

Ang-Cheng Yang, L. H. Wu, W. W. Cheng

Abstract In this paper, we have investigated the behavior alterations and properties of the quantum speed limit time (QSLT) under different parameters’ modulations, as well as its relation to the non-Markovianity of the system in the presence of random telegraph noise (RTN) and colored noise (CN). We found that when the switching rate of RTN and the power-law exponent of CN are varied, both QSLT and the non-Markovianity of the system change, and a specific negative correlation exists between them. We have also explored the consistency of the above-mentioned conclusions for both pure and mixed initial states. Our findings may be conducive to uncovering the mechanism of non-Markovian regulation of QSLT and providing possible artificial control schemes for this behavior.

Bertúlio de Lima Bernardo

Doron Cohen

Localization in the quantum-kicked-rotator problem leads to nontrivial dynamical correlations that are absent in the classical limit. Consequently, both coherence and diffusion in the presence of colored noise depend on its long-range autocorrelations. This implies that a Markovian treatment of the dynamics for a system that is coupled to a low-temperature heat bath is not valid even if the system is classically chaotic.

William George Unruh