Dynamics of Super Quantum Correlations and Quantum Correlations for a System of Three Qubits

The dynamics of quantum discord for two qubits independently interacting with dephasing reservoirs have been studied recently.The authors [Phys.Rev.A 88（2013） 034304] found that for some Bell-diagonal states（BDS）which interact with their environments the calculation of quantum discord could experien...

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Bibliographic Details
Published in:Communications in theoretical physics 2016-04, Vol.65 (4), p.447-452
Main Authors: Siyouri, F., Baz, M. El, Rfifi, S., Hassouni, Y.
Format: Article
Language:English
Subjects:
BDS
Bell-diagonal states
Correlation
Dynamic tests
Dynamical systems
Dynamics
Mathematical analysis
measurement strength
normal quantum discord
Qubits (quantum computing)
Reservoirs
super quantum discord
Theoretical physics
关联动力学
比特
相互作用
系统
量子位
量子关联
量子退相干
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Summary:The dynamics of quantum discord for two qubits independently interacting with dephasing reservoirs have been studied recently.The authors [Phys.Rev.A 88（2013） 034304] found that for some Bell-diagonal states（BDS）which interact with their environments the calculation of quantum discord could experience a sudden transition in its dynamics,this phenomenon is known as the sudden change.Here in the present paper,we analyze the dynamics of normal quantum discord and super quantum discord for tripartite Bell-diagonal states independently interacting with dephasing reservoirs.Then,we find that basis change does not necessary mean sudden change of quantum correlations.
ISSN:0253-6102
1572-9494
DOI:10.1088/0253-6102/65/4/447