Tuning non-Markovianity by spin-dynamics control

Salvatore Lorenzo; Francesco Plastina; Mauro Paternostro

doi:10.1103/PhysRevA.87.022317

Tuning non-Markovianity by spin-dynamics control

Salvatore Lorenzo^*, Francesco Plastina, Mauro Paternostro

^*Corresponding author for this work

School of Mathematics and Physics

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

264 Downloads (Pure)

Abstract

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

Original language	English
Article number	022317
Number of pages	7
Journal	Physical Review A (Atomic, Molecular, and Optical Physics)
Volume	87
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.87.022317
Publication status	Published - 13 Feb 2013

Access to Document

10.1103/PhysRevA.87.022317Licence: Unspecified

Tuning non-Markovianity by spin-dynamics control
©2013 American Physical Society. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Final published version, 798 KBLicence: Unspecified

Cite this

@article{a472656b58314c94b683b159b6024260,

title = "Tuning non-Markovianity by spin-dynamics control",

abstract = "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",

author = "Salvatore Lorenzo and Francesco Plastina and Mauro Paternostro",

year = "2013",

month = feb,

day = "13",

doi = "10.1103/PhysRevA.87.022317",

language = "English",

volume = "87",

journal = "Physical Review A (Atomic, Molecular, and Optical Physics)",

issn = "1050-2947",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Tuning non-Markovianity by spin-dynamics control

AU - Lorenzo, Salvatore

AU - Plastina, Francesco

AU - Paternostro, Mauro

PY - 2013/2/13

Y1 - 2013/2/13

N2 - 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

AB - 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

U2 - 10.1103/PhysRevA.87.022317

DO - 10.1103/PhysRevA.87.022317

M3 - Article

VL - 87

JO - Physical Review A (Atomic, Molecular, and Optical Physics)

JF - Physical Review A (Atomic, Molecular, and Optical Physics)

SN - 1050-2947

IS - 2

M1 - 022317

ER -

Tuning non-Markovianity by spin-dynamics control

Abstract

Access to Document

Fingerprint

Cite this