期刊
PHYSICAL REVIEW A
卷 93, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.93.052103
关键词
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资金
- EU [641277]
- Academy of Finland [287750]
- Magnus Ehrnrooth Foundation
- Academy of Finland (AKA) [287750, 287750] Funding Source: Academy of Finland (AKA)
We present a general model of qubit dynamics which entails pure dephasing and dissipative time-local master equations. This allows us to describe the combined effect of thermalization and dephasing beyond the usual Markovian approximation. We investigate the complete positivity conditions and introduce a heuristic model that is always physical and provides the correct Markovian limit. We study the effects of temperature on the non-Markovian behavior of the system and show that the noise additivity property discussed by Yu and Eberly [Phys. Rev. Lett. 97, 140403 (2006)] holds beyond the Markovian limit.
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