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Number of results

Journal

2015 | 13 | 1 |

Article title

Effects of phase shift on bipartite and multipartite correlations of a spin chain under dephasing

Content

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Languages of publication

EN

Abstracts

EN
We investigate the effects of phase shift on entanglement,
quantum discord, geometric discord, and spinsqueezing
of a Heisenberg chain under dephasing. An analytical
solution of the present model is obtained. Our results
show that the initial correlations of the spin chain
could be partially stored for a long time in the presence
of dephasing and the amount of steady state correlations
can be adjusted via phase shift. Particularly, we find the
effects of phase shift on quantum discord and geometric
discord are not always the same, i.e., the increase of
geometric discord does not always imply the increase of
quantum discord. Then, we calculate the spin-squeezing
of the spin chain and find that spin-squeezing first increases
with time and then reaches a plateau. The amount
of spin-squeezing can be controlled via phase shift.

Keywords

Publisher

Journal

Year

Volume

13

Issue

1

Physical description

Dates

received
22 - 9 - 2014
accepted
23 - 3 - 2015
online
28 - 4 - 2015

Contributors

author
  • Department of Applied
    Physics, East China Jiaotong University, Nanchang 330013, People’s
    Republic of China
  • Institute for Quantum Computing,
    University of Waterloo, Ontario N2L 3G1, Canada
  • Department of Applied
    Physics, East China Jiaotong University, Nanchang 330013, People’s
    Republic of China

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_1515_phys-2015-0025
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