Effect of Different Environments on Multipartite Global Discord

Bao Ming Xu; Jian Zou; Jun Gang Li; Bin Shao

doi:10.1088/0253-6102/63/3/291

Effect of Different Environments on Multipartite Global Discord

Bao Ming Xu, Jian Zou, Jun Gang Li, Bin Shao

School of Physics

Beijing Institute of Technology

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

1 Citation (Scopus)

Abstract

We investigate the influences of non-Markovian dissipation and global dephasing process on the dynamical behaviors of global discord among four qubits. We find that for the non-Markovian dissipation model W state is the most robust to decoherence compared to Dicke and GHZ states; however, for the global dephasing model Dicke state is the most robust to decoherence among them. Also the dynamical behaviors of global quantum discord are quite different from that of the multipartite entanglement for the non-Markovian dissipation model, while they are very similar to each other for the global dephasing model.

Original language	English
Article number	291
Pages (from-to)	291-295
Number of pages	5
Journal	Communications in Theoretical Physics
Volume	63
Issue number	3
DOIs	https://doi.org/10.1088/0253-6102/63/3/291
Publication status	Published - 1 Mar 2015

Keywords

decoherence
global discord
multipartite entanglement
non-markovian

Access to Document

10.1088/0253-6102/63/3/291

Cite this

@article{68748b66d1134673b65ca9a56a737cc9,

title = "Effect of Different Environments on Multipartite Global Discord",

abstract = "We investigate the influences of non-Markovian dissipation and global dephasing process on the dynamical behaviors of global discord among four qubits. We find that for the non-Markovian dissipation model W state is the most robust to decoherence compared to Dicke and GHZ states; however, for the global dephasing model Dicke state is the most robust to decoherence among them. Also the dynamical behaviors of global quantum discord are quite different from that of the multipartite entanglement for the non-Markovian dissipation model, while they are very similar to each other for the global dephasing model.",

keywords = "decoherence, global discord, multipartite entanglement, non-markovian",

author = "Xu, {Bao Ming} and Jian Zou and Li, {Jun Gang} and Bin Shao",

note = "Publisher Copyright: {\textcopyright} 2015 Chinese Physical Society and IOP Publishing Ltd.",

year = "2015",

month = mar,

day = "1",

doi = "10.1088/0253-6102/63/3/291",

language = "English",

volume = "63",

pages = "291--295",

journal = "Communications in Theoretical Physics",

issn = "0253-6102",

publisher = "IOP Publishing Ltd.",

number = "3",

}

TY - JOUR

T1 - Effect of Different Environments on Multipartite Global Discord

AU - Xu, Bao Ming

AU - Zou, Jian

AU - Li, Jun Gang

AU - Shao, Bin

PY - 2015/3/1

Y1 - 2015/3/1

N2 - We investigate the influences of non-Markovian dissipation and global dephasing process on the dynamical behaviors of global discord among four qubits. We find that for the non-Markovian dissipation model W state is the most robust to decoherence compared to Dicke and GHZ states; however, for the global dephasing model Dicke state is the most robust to decoherence among them. Also the dynamical behaviors of global quantum discord are quite different from that of the multipartite entanglement for the non-Markovian dissipation model, while they are very similar to each other for the global dephasing model.

AB - We investigate the influences of non-Markovian dissipation and global dephasing process on the dynamical behaviors of global discord among four qubits. We find that for the non-Markovian dissipation model W state is the most robust to decoherence compared to Dicke and GHZ states; however, for the global dephasing model Dicke state is the most robust to decoherence among them. Also the dynamical behaviors of global quantum discord are quite different from that of the multipartite entanglement for the non-Markovian dissipation model, while they are very similar to each other for the global dephasing model.

KW - decoherence

KW - global discord

KW - multipartite entanglement

KW - non-markovian

UR - http://www.scopus.com/inward/record.url?scp=84930206812&partnerID=8YFLogxK

U2 - 10.1088/0253-6102/63/3/291

DO - 10.1088/0253-6102/63/3/291

M3 - Article

AN - SCOPUS:84930206812

SN - 0253-6102

VL - 63

SP - 291

EP - 295

JO - Communications in Theoretical Physics

JF - Communications in Theoretical Physics

IS - 3

M1 - 291

ER -

Effect of Different Environments on Multipartite Global Discord

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this