期刊
PHYSICAL REVIEW A
卷 92, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.92.062109
关键词
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资金
- EPSRC (UK) via the Doctoral Training Centre in Condensed Matter Physics [EP/G03673X/1]
- Sao Paulo Research Foundation (FAPESP) [2014/20941-7]
- EU Collaborative project QuProCS [641277]
- Magnus Ehrnrooth Foundation
- Academy of Finland [287750]
- Engineering and Physical Sciences Research Council [1281403] Funding Source: researchfish
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.
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