Tuning non-Markovianity by spin-dynamics control

被引：32

作者：

Lorenzo, Salvatore ^{[1
,2
]}

Plastina, Francesco ^{[1
,2
]}

Paternostro, Mauro ^{[3
]}

机构：

[1] Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, CS, Italy

[2] Univ Calabria, Ist Nazl Fis Nucl, Grp Collegato Cosenza, Calabria, Italy

[3] Queens Univ Belfast, Sch Math & Phys, Ctr Theoret Atom Mol & Opt Phys, Belfast BT7 1NN, Antrim, North Ireland

来源：

PHYSICAL REVIEW A | 2013年 / 87卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevA.87.022317

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the interplay between forgetful and memory-keeping evolution enforced on a two-level system by a multi-spin environment whose elements are coupled to local bosonic baths. Contrarily to the expectation that any non-Markovian effect would be buried by the forgetful mechanism induced by the spin-bath coupling, one can actually induce a full Markovian-to-non-Markovian transition of the two-level system's dynamics, controllable by parameters such as the mismatch between the energy of the two-level system and of the spin environment. For a symmetric coupling, the amount of non-Markovianity surprisingly grows with the number of decoherence channels. DOI: 10.1103/PhysRevA.87.022317

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页数：7

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