A1 Refereed original research article in a scientific journal

Time-invariant discord in dynamically decoupled systems




AuthorsAddis C, Karpat G, Maniscalco S

PublisherAMER PHYSICAL SOC

Publication year2015

JournalPhysical Review A

Journal name in sourcePHYSICAL REVIEW A

Journal acronymPHYS REV A

Article numberARTN 062109

Volume92

Issue6

Number of pages6

ISSN1050-2947

DOIhttps://doi.org/10.1103/PhysRevA.92.062109


Abstract

Dynamical decoupling protocols are one of the most used tools for efficient quantum error corrections and for reservoir engineering. In this paper we study the effect of dynamical decoupling pulses on the preservation of both quantum and classical correlations, and their influence on the intriguing phenomenon of time-invariant discord. We study two qubits experiencing local dephasing with an Ohmic class spectrum and subject to dynamical decoupling protocols. We investigate the connection between the dynamics of both classical and quantum correlations and the behavior of information flow between system and environment. Finally, we establish a set of necessary conditions for which time-invariant discord can be created using dynamically decoupling techniques.




Last updated on 2024-26-11 at 20:52