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2015 | 13 | 1 |
Article title

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

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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
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_1515_phys-2015-0025
Identifiers
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